CN106772179A - The modification method and device of zero-sequence impedance parameter - Google Patents
The modification method and device of zero-sequence impedance parameter Download PDFInfo
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Abstract
The invention discloses the modification method and device of a kind of zero-sequence impedance parameter.Wherein, the method includes：After at least one set of second transmission line of electricity is set up around the first transmission line of electricity, the pitch information between the transmission line information of the first transmission line of electricity, the transmission line information and the first transmission line of electricity and every group of second transmission line of electricity of every group of second transmission line of electricity is obtained；Pitch information between transmission line information according to the first transmission line of electricity, the transmission line information and the first transmission line of electricity and every group of second transmission line of electricity of every group of second transmission line of electricity, obtains the equivalent circuit of the first transmission line of electricity and at least one set of second transmission line of electricity；Equivalent circuit to the first transmission line of electricity and at least one set of second transmission line of electricity carries out equivalent process, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity.The present invention solves and zero-sequence impedance parameter is modified by way of remeasuring zero-sequence impedance parameter in the prior art, influences the technical problem of the normal power supply of transmission line of electricity.
Description
Technical field
The present invention relates to field of power, in particular to the modification method and device of a kind of zero-sequence impedance parameter.
Background technology
The Load flow calculation of power system, calculation of short-circuit current, relay protection setting and accident analysis etc. can use transmission of electricity
Line parameter circuit value.The accurate transmission line parameter that obtains is for ensureing that the items of power system are analyzed and calculating has great importance.
In Practical Project, there are many parallel laying new lines on the same corridor of working line and held with expanding transmission of electricity
The phenomenon of amount so that the electromagnetic environment residing for transmission line of electricity becomes increasingly complex.The positive order parameter of transmission line of electricity is returned in the absence of different
Coupling between circuit, therefore the positive order parameter of old circuit of the new line on having run will not produce influence.But to parallel laying
There is zero-sequence mutual inductance between twice and above transmission line of electricity, loop, due to the presence of zero-sequence mutual inductance, the new circuit for setting up can be to having transported
Capable old line parameter circuit value produces influence, after old circuit periphery electromagnetic environment changes so that the zero sequence ginseng of old circuit original measurement
Number changes, and becomes no longer accurate, and the every of influence power system analyzes and calculate.
The acquisition methods of transmission line parameter mainly have three kinds：The first look-up table, in some related to transmission line of electricity
On handbook, monograph or teaching material, the corresponding resistance of wire and reactance parameter table of different model are given, certain can be obtained by tabling look-up
The resistance and reactance parameter of certain model wire under voltage class, but, the method does not provide Zero sequence parameter typically, even if providing
Zero sequence parameter also tends to that error is larger, because Zero sequence parameter and the environmental concerns of the construction of line are very big, it is impossible to led in advance
With and accurately Zero sequence parameter make form for inquiry.Second theoretical calculation, according to the several of shaft tower pattern, wire and ground wire
The information such as what distribution, wire and ground wire style and soil resistivity can try to achieve the impedance and admittance of circuit by theoretical calculation formula
Etc. parameters, but, needing to use soil resistivity in calculating process, this parameter is difficult accurate acquisition, so using this
The circuit Zero sequence parameter that method is obtained often error also than larger.The third actual mensuration, can be divided into off-line measurement and
Line measuring method, as shown in figure 1, detaching line outage to be measured from power network during off-line measurement method measurement circuitry parameter
Come, individually apply signal, measurement voltage, electric current, then calculate line parameter circuit value, circuit left side one end three-phase ground, the right one end three
Phase simultaneously connects applying single phase industrial frequence power supply, measurement voltage phasor U, electric current phasor I, and obtaining zero-sequence impedance parameter is：Such as Fig. 2
Shown, On-line Measuring Method is carried out in the case of circuit is running, by the voltage at synchro measure circuit first and last end, electric current phase
Amount calculates line parameter circuit value, measures and calculate head end residual voltage electric current phasor respectively U1, I1, end residual voltage electric current phasor
Respectively U2, I2, circuit zero sequence capacitance parameter and impedance parameter are：
But, off-line measurement method can influence the normal operation of circuit, it is general it is newly-built into circuit measured before putting into operation, for having transported
Capable circuit, after its Zero sequence parameter changes, being stopped transport remeasures Zero sequence parameter and can influence normal power supply, reduces
Power supply reliability, does not measure typically；On-line Measuring Method needs to produce sufficiently large zero sequence current signal, and engineering is in practice
Having inject zero sequence signal by voltage transformer secondary side or obtain zero sequence signal by disconnecting phase line, but both modes are all
Influence can be produced on the safety of operation, be easily caused the generation of the system failure, engineering is general in practice not to allow so operation.
For being modified to zero-sequence impedance parameter by way of remeasuring zero-sequence impedance parameter in the prior art, shadow
The problem of the normal power supply of transmission line of electricity is rung, effective solution is not yet proposed at present.
The content of the invention
The modification method and device of a kind of zero-sequence impedance parameter are the embodiment of the invention provides, at least to solve prior art
In zero-sequence impedance parameter is modified by way of remeasuring zero-sequence impedance parameter, influence transmission line of electricity normal power supply
Technical problem.
A kind of one side according to embodiments of the present invention, there is provided modification method of zero-sequence impedance parameter, including：
After setting up at least one set of second transmission line of electricity around one transmission line of electricity, the transmission line information of the first transmission line of electricity, every is obtained
The transmission line information and the pitch information between the first transmission line of electricity and every group of second transmission line of electricity of the second transmission line of electricity of group；
The transmission line information and the first transmission line of electricity of transmission line information according to the first transmission line of electricity, every group of second transmission line of electricity
And the pitch information between every group of second transmission line of electricity, obtain the equivalence of the first transmission line of electricity and at least one set of second transmission line of electricity
Circuit；Equivalent circuit to the first transmission line of electricity and at least one set of second transmission line of electricity carries out equivalent process, obtains the first transmission of electricity
The correction value of the zero-sequence impedance parameter of circuit.
Further, transmission line information includes following one or more：Wire parameter, aerial earth wire parameter, shaft tower ginseng
Number, the equivalent zero sequence impedance of mains side, the equivalent zero sequence impedance of load-side, zero-sequence impedance parameter.
Further, according to the first transmission line of electricity transmission line information, the transmission line of electricity of every group of second transmission line of electricity are believed
Breath and the pitch information between the first transmission line of electricity and every group of second transmission line of electricity, obtain the first transmission line of electricity and at least one set
The equivalent circuit of the second transmission line of electricity, including：Shaft tower parameter and zero-sequence impedance parameter according to the first transmission line of electricity, obtain soil
Resistivity；Aerial earth wire parameter, first transmission line of electricity of wire parameter according to the first transmission line of electricity, every group of second transmission line of electricity
Shaft tower parameter, the shaft tower parameter of every group of second transmission line of electricity, between the first transmission line of electricity and every group of second transmission line of electricity between
Away from information and soil resistivity, obtain every group of second transmission line of electricity zero-sequence impedance parameter and the first transmission line of electricity and every group
Zero sequence mutual impedance parameter between second transmission line of electricity；Zero-sequence impedance parameter according to the first transmission line of electricity, every group second transmit electricity
Zero sequence mutual impedance parameter between the zero-sequence impedance parameter of circuit, the first transmission line of electricity and every group of second transmission line of electricity, every group
The equivalent zero sequence impedance of the mains side of two transmission lines of electricity and every group of equivalent zero sequence impedance of the load-side of the second transmission line of electricity, obtain
To the first transmission line of electricity and the equivalent circuit of at least one set of second transmission line of electricity.
Further, the equivalent circuit to the first transmission line of electricity and at least one set of second transmission line of electricity carries out equivalent process,
The correction value of the zero-sequence impedance parameter of the first transmission line of electricity is obtained, including：Decoupling treatment is carried out to equivalent circuit, the first electricity is obtained
Road；Connection in series-parallel treatment is carried out to the first circuit, second circuit is obtained；According to the equivalent resistance of second circuit, first is obtained defeated
The correction value of the zero-sequence impedance parameter of electric line.
Further, in the case of one group of second transmission line of electricity is set up around the first transmission line of electricity, second circuit etc.
Imitating resistance value is：Wherein, ZX0It is the zero-sequence impedance parameter of the first transmission line of electricity, ZY0For second defeated
The zero-sequence impedance parameter of electric line, ZY10It is the equivalent zero sequence impedance of the mains side of the second transmission line of electricity, ZY20It is the second power transmission line
The equivalent zero sequence impedance of the load-side on road, ZXYmIt is the zero sequence mutual impedance parameter between the first transmission line of electricity and the second transmission line of electricity.
Another aspect according to embodiments of the present invention, additionally provides a kind of correcting device of zero-sequence impedance parameter, including：Obtain
Modulus block, after setting up at least one set of second transmission line of electricity around the first transmission line of electricity, obtains the first transmission line of electricity
The transmission line information and the first transmission line of electricity and every group of second transmission line of electricity of transmission line information, every group of second transmission line of electricity
Between pitch information；First processing module, for the transmission line information according to the first transmission line of electricity, every group of second power transmission line
Pitch information between the transmission line information on road and the first transmission line of electricity and every group of second transmission line of electricity, obtains the first transmission of electricity
The equivalent circuit of circuit and at least one set of second transmission line of electricity；Second processing module, for the first transmission line of electricity and at least one
The equivalent circuit of the second transmission line of electricity of group carries out equivalent process, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity.
Further, transmission line information includes following one or more：Wire parameter, aerial earth wire parameter, shaft tower ginseng
Number, the equivalent zero sequence impedance of mains side, the equivalent zero sequence impedance of load-side, zero-sequence impedance parameter.
Further, first processing module includes：First treatment submodule, for being joined according to the shaft tower of the first transmission line of electricity
Number and zero-sequence impedance parameter, obtain soil resistivity；Second processing submodule, for being joined according to the wire of the first transmission line of electricity
Several, every group of aerial earth wire parameter of the second transmission line of electricity, the shaft tower parameter of the first transmission line of electricity, the bar of every group of second transmission line of electricity
Pitch information and soil resistivity between tower parameter, the first transmission line of electricity and every group of second transmission line of electricity, obtain every group
Zero sequence mutual impedance ginseng between the zero-sequence impedance parameter of two transmission lines of electricity and the first transmission line of electricity and every group of second transmission line of electricity
Number；3rd treatment submodule, the zero sequence for the zero-sequence impedance parameter according to the first transmission line of electricity, every group of second transmission line of electricity hinders
Zero sequence mutual impedance parameter between anti-parameter, the first transmission line of electricity and every group of second transmission line of electricity, every group of second transmission line of electricity
The equivalent zero sequence impedance of mains side and every group of equivalent zero sequence impedance of the load-side of the second transmission line of electricity, obtain the first power transmission line
Road and the equivalent circuit of at least one set of second transmission line of electricity.
Further, Second processing module includes：Fourth process submodule, for carrying out decoupling treatment to equivalent circuit,
Obtain the first circuit；5th treatment submodule, for carrying out connection in series-parallel treatment to the first circuit, obtains second circuit；At 6th
Reason submodule, for the equivalent resistance according to second circuit, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity.
Further, in the case of one group of second transmission line of electricity is set up around the first transmission line of electricity, second circuit etc.
Imitating resistance value is：Wherein, ZX0It is the zero-sequence impedance parameter of the first transmission line of electricity, ZY0For second defeated
The zero-sequence impedance parameter of electric line, ZY10It is the equivalent zero sequence impedance of the mains side of the second transmission line of electricity, ZY20It is the second power transmission line
The equivalent zero sequence impedance of the load-side on road, ZXYmIt is the zero sequence mutual impedance parameter between the first transmission line of electricity and the second transmission line of electricity.
In embodiments of the present invention, after setting up at least one set of second transmission line of electricity around the first transmission line of electricity, obtain
The transmission line information of the first transmission line of electricity, the transmission line information and the first transmission line of electricity of every group of second transmission line of electricity and every
Pitch information between the second transmission line of electricity of group, transmission line information, every group of second transmission line of electricity according to the first transmission line of electricity
Transmission line information and the pitch information between the first transmission line of electricity and every group of second transmission line of electricity, obtain the first power transmission line
Road and the equivalent circuit of at least one set of second transmission line of electricity, to the first transmission line of electricity and the equivalence of at least one set of second transmission line of electricity
Circuit carries out equivalent process, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity, so as to realize the electricity around circuit
Magnetic environment change is modified after occurring to circuit Zero sequence parameter, and the power transmission line zero-sequence impedance parameter after calibration is more accurate,
So that the Electrical power system analysis and computing result for being related to zero-sequence impedance parameter is more accurate.Easily mainly arrive, makeover process
Actual measurement is not carried out, the normal operation of circuit is not influenceed, solved in the prior art by remeasuring zero-sequence impedance parameter
Mode zero-sequence impedance parameter is modified, influence transmission line of electricity normal power supply technical problem.Therefore, by the present invention
The scheme that above-described embodiment is provided, can reach and improve amendment precision, ensure the effect that transmission line of electricity normally runs.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the off-line measurement of a kind of single loop line zero-sequence impedance parameter according to prior art；
Fig. 2 is the schematic diagram of the on-line measurement of a kind of single loop line zero-sequence impedance parameter according to prior art；
Fig. 3 is a kind of flow chart of the modification method of zero-sequence impedance parameter according to embodiments of the present invention；
Fig. 4 is the signal of the transmission line of electricity impedance of the multiple penetration depth of a kind of optional calculating according to embodiments of the present invention
Figure；
Fig. 5 is that one kind according to embodiments of the present invention optionally sets up one group of second power transmission line around the first transmission line of electricity
The schematic diagram on road；
Fig. 6 is the schematic diagram of a kind of optional equivalent circuit according to embodiments of the present invention；
Fig. 7 is the schematic diagram of a kind of optional first circuit according to embodiments of the present invention；
Fig. 8 is the schematic diagram of a kind of optional second circuit according to embodiments of the present invention；And
Fig. 9 is a kind of schematic diagram of the correcting device of zero-sequence impedance parameter according to embodiments of the present invention.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model of present invention protection
Enclose.
It should be noted that term " first ", " in description and claims of this specification and above-mentioned accompanying drawing
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or other intrinsic steps of equipment or unit.
Embodiment 1
According to embodiments of the present invention, there is provided a kind of embodiment of the modification method of zero-sequence impedance parameter, it is necessary to explanation
It is that can be performed in the such as one group computer system of computer executable instructions the step of the flow of accompanying drawing is illustrated,
And, although logical order is shown in flow charts, but in some cases, can be performed with different from order herein
Shown or described step.
Fig. 3 is a kind of flow chart of the modification method of zero-sequence impedance parameter according to embodiments of the present invention, as shown in figure 3,
The method comprises the following steps：
Step S302, after setting up at least one set of second transmission line of electricity around the first transmission line of electricity, obtains first and transmits electricity
The transmission line information of circuit, the transmission line information and the first transmission line of electricity of every group of second transmission line of electricity and every group are second defeated
Pitch information between electric line.
Alternatively, in the above embodiment of the present invention, transmission line information includes following one or more：Wire parameter,
Aerial earth wire parameter, shaft tower parameter, the equivalent zero sequence impedance of mains side, the equivalent zero sequence impedance of load-side, zero-sequence impedance parameter.
Specifically, above-mentioned wire parameter can include geometry distribution, type, resistance and the reactance of wire, it is above-mentioned
Aerial earth wire parameter can include geometry distribution, type, resistance and the reactance of ground wire, and above-mentioned shaft tower parameter can include tower
Rod-type formula.
In a kind of optional scheme, having run, parallel laying near old circuit (the first i.e. above-mentioned transmission line of electricity) is defeated
After electric line (the second i.e. above-mentioned transmission line of electricity) is such that old circuit periphery electromagnetic environment changes, following letter can be obtained
Breath：Former zero-sequence impedance parameter, wire parameter and the aerial earth wire parameter of old circuit, the new line with old circuit parallel laying are run
The equivalent zero sequence impedance of the wire parameter on road, aerial earth wire parameter, the equivalent zero sequence impedance of mains side and load-side, and it is new and old
The distance between circuit.
Step S304, transmission line information, the transmission line of electricity of every group of second transmission line of electricity according to the first transmission line of electricity are believed
Breath and the pitch information between the first transmission line of electricity and every group of second transmission line of electricity, obtain the first transmission line of electricity and at least one set
The equivalent circuit of the second transmission line of electricity.
Step S306, the equivalent circuit to the first transmission line of electricity and at least one set of second transmission line of electricity carries out equivalent process,
Obtain the correction value of the zero-sequence impedance parameter of the first transmission line of electricity.
In a kind of optional scheme, mutual inductance between new and old circuit, new can be calculated according to the above- mentioned information for getting
Circuit zero-sequence impedance parameter, new line two ends equivalence zero sequence impedance etc., so as to obtain the equivalent circuit of new and old circuit.To equivalent electricity
Road carries out decoupling abbreviation, and amendment has run the zero-sequence impedance parameter of old circuit, obtained calibration value (i.e. above-mentioned correction value).
By the above embodiment of the present invention, after setting up at least one set of second transmission line of electricity around the first transmission line of electricity,
Obtain transmission line information, the transmission line information and the first transmission line of electricity of every group of second transmission line of electricity of the first transmission line of electricity
And the pitch information between every group of second transmission line of electricity, transmission line information according to the first transmission line of electricity, every group second transmit electricity
Pitch information between the transmission line information of circuit and the first transmission line of electricity and every group of second transmission line of electricity, obtains first defeated
The equivalent circuit of electric line and at least one set of second transmission line of electricity, to the first transmission line of electricity and at least one set of second transmission line of electricity
Equivalent circuit carries out equivalent process, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity, so as to realize in circuit week
Enclose after electromagnetic environment change occurs and circuit Zero sequence parameter is modified, the power transmission line zero-sequence impedance parameter after calibration is more accurate
Really so that the Electrical power system analysis and computing result for being related to zero-sequence impedance parameter is more accurate.Easily mainly arrive, corrected
Journey does not carry out actual measurement, and the normal operation of circuit is not influenceed, solves and is joined by remeasuring zero sequence impedance in the prior art
Several modes are modified to zero-sequence impedance parameter, influence the technical problem of the normal power supply of transmission line of electricity.Therefore, by this hair
The scheme that bright above-described embodiment is provided, can reach and improve amendment precision, ensure the effect that transmission line of electricity normally runs.
Alternatively, in the above embodiment of the present invention, step S304, transmission line information according to the first transmission line of electricity,
Spacing letter between every group of transmission line information and the first transmission line of electricity and every group of second transmission line of electricity of the second transmission line of electricity
Breath, obtains the equivalent circuit of the first transmission line of electricity and at least one set of second transmission line of electricity, including：
Step S3042, shaft tower parameter and zero-sequence impedance parameter according to the first transmission line of electricity, obtains soil resistivity.
In a kind of optional scheme, can be anti-according to the shaft tower parameter and original zero-sequence impedance parameter for having run old circuit
Soil resistivity ρ below push away line curb line.
Step S3044, wire parameter according to the first transmission line of electricity, the aerial earth wire parameter of every group of second transmission line of electricity,
The shaft tower parameter of the first transmission line of electricity, the shaft tower parameter of every group of second transmission line of electricity, the first transmission line of electricity and every group second are transmitted electricity
Pitch information and soil resistivity between circuit, obtain the zero-sequence impedance parameter of every group of second transmission line of electricity and first defeated
Zero sequence mutual impedance parameter between electric line and every group of second transmission line of electricity.
In a kind of optional scheme, can be according to the model of the wire for having run old circuit and parameter, aerial earth wire
Model and parameter, shaft tower parameter, the model and parameter of the wire of new line, the model of aerial earth wire and parameter, shaft tower parameter, newly
Spacing between old circuit, and the information such as the soil resistivity ρ that calculates of previous step, the zero sequence impedance calculated to new line are joined
Zero sequence mutual impedance parameter between several and new and old circuit.
Step S3046, zero-sequence impedance parameter, the zero sequence impedance of every group of second transmission line of electricity according to the first transmission line of electricity are joined
Number, the zero sequence mutual impedance parameter between the first transmission line of electricity and every group of second transmission line of electricity, the power supply of every group of second transmission line of electricity
The equivalent zero sequence impedance of side and every group of equivalent zero sequence impedance of the load-side of the second transmission line of electricity, obtain the first transmission line of electricity and
The equivalent circuit of at least one set of second transmission line of electricity.
In a kind of optional scheme, can be according to the zero sequence for having run the former zero-sequence impedance parameter of old circuit, new line
The equivalent zero sequence impedance of the mains side of zero sequence mutual impedance parameter and new line between impedance parameter, new and old circuit and load
The equivalent zero sequence impedance of side, drafting obtains the equivalent circuit of new and old circuit.
Herein it should be noted that in theoretical calculation, as shown in figure 4, the earth can use the distance that locates below ground level
ForIdeal plane represent,Equal to the multiple penetration depth of plane wave, then penetration depth is again：Its
In, ρ is soil resistivity, and μ is soil magnetic conductivity, typically desirable space permeability μ0.The impedance of " wire i- ground return circuits " is：Wherein, GMRiIt is the geometrical mean radius of wire i, hiFor wire hitch point highly subtracts 2/3
Maximum sag.Impedance between " wire i- ground return circuits " and " wire k- ground return circuits " is：Obtain
Ground wire is eliminated after all wires and ground wire self-impedance and mutual impedance, the impedance matrix between each phase is obtained, then using symmetrical point
Change of variable obtains the positive sequence and zero sequence impedance of overhead transmission line.
By above-mentioned steps S3042 to step S3046, due to make use of, relatively accurate first original circuit parameter is counter to be pushed away
Soil resistivity, such that it is able to accurately obtain the soil resistivity for being difficult to determine originally so that correction value is more accurate.
Alternatively, in the above embodiment of the present invention, step S306 transmits electricity to the first transmission line of electricity and at least one set of second
The equivalent circuit of circuit carries out equivalent process, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity, including：
Step S3062, decoupling treatment is carried out to equivalent circuit, obtains the first circuit.
Step S3064, connection in series-parallel treatment is carried out to the first circuit, obtains second circuit.
Step S3066, according to the equivalent resistance of second circuit, the zero-sequence impedance parameter for obtaining the first transmission line of electricity is repaiied
On the occasion of.
In a kind of optional scheme, after the equivalent circuit for obtaining new and old circuit, two can be carried out to equivalent circuit
Decoupling Equivalent treatment between loop line road, you can to simplify to equivalent circuit Decoupling Equivalent first, obtain Decoupling Equivalent circuit (i.e.
The first above-mentioned circuit), connection in series-parallel equivalent predigesting then is carried out to Decoupling Equivalent circuit, obtain second circuit, then running
Nearby after parallel laying transmission line of electricity, the zero-sequence impedance parameter of old circuit can be calibrated to the equivalent electric of second circuit to old circuit
Resistance.
Alternatively, in the above embodiment of the present invention, one group of second transmission line of electricity is set up around the first transmission line of electricity
In the case of, the equivalent resistance of second circuit is：Wherein, ZX0It is the zero sequence of the first transmission line of electricity
Impedance parameter, ZY0It is the zero-sequence impedance parameter of the second transmission line of electricity, ZY10It is the equivalent zero sequence resistance of the mains side of the second transmission line of electricity
It is anti-, ZY20It is the equivalent zero sequence impedance of the load-side of the second transmission line of electricity, ZXYmFor the first transmission line of electricity and the second transmission line of electricity it
Between zero sequence mutual impedance parameter.
In a kind of optional scheme, one group of transmission line of electricity of parallel laying is being run near old circuit so that old circuit is all
Enclose after electromagnetic environment changes, can be according to by the equivalent resistance of second circuitAs old
The correction value of the zero-sequence impedance parameter of circuit.
With reference to Fig. 5 to Fig. 8, with after setting up another time new line (circuit Y) around an old circuit (circuit X),
As a example by the zero-sequence impedance parameter of amendment circuit X, a kind of preferred embodiment of the invention is described in detail, the method is as follows：
1st, information is obtained, including：The wire and aerial earth wire model and parameter of circuit X and circuit Y, circuit X and circuit Y
Spacing, the zero sequence equivalent impedance Z of circuit Y mains sides between shaft tower parameter, circuit X and circuit YY10, circuit Y load sides zero
Sequence impedance ZY20, the original zero-sequence impedance parameter Z of circuit XX0。
2nd, according to circuit x-ray road shaft tower parameter and original zero-sequence impedance parameter ZX0Soil electricity below anti-push away line curb line
Resistance rate ρ.
3rd, according to " wire and aerial earth wire model of circuit X and circuit Y and the shaft tower parameter of parameter, circuit X and circuit Y,
The soil resistivity ρ that spacing, the 2nd step between circuit X and circuit Y are calculated " information calculates circuit Y zero sequence self-impedance parameters ZY0
And the zero sequence mutual impedance parameter Z between circuit X and circuit YXYm。
4th, equivalent circuit as shown in Figure 6 is drawn.
5th, Decoupling Equivalent abbreviation is carried out to circuit shown in Fig. 6, obtains circuit as shown in Figure 7.
6th, connection in series-parallel equivalent predigesting is carried out to circuit shown in Fig. 7, obtains circuit as shown in Figure 8.
Herein it should be noted that above only setting up another time situation of single back line around simplest single back line
The application flow of invention methods described is carried out, old circuit can have been set up during for more than two loop line roads with a plurality of newly-increased circuit
Termination power, progressively carry out between two loop lines Decoupling Equivalent treatment, finally realize transmission line of electricity periphery electromagnetic environment change after
The calibration of circuit zero-sequence impedance parameter.
By the above method, circuit zero-sequence impedance parameter is modified after the change of circuit periphery electromagnetic environment, after amendment
Power transmission line zero-sequence impedance parameter it is more accurate so that be related to the Electrical power system analysis and computing result of zero-sequence impedance parameter more
Plus it is accurate.In addition, makeover process mustn't be measured actually, the normal operation of circuit is not influenceed.Simultaneously because make use of comparatively
Accurate first original circuit parameter is counter to push away soil resistivity, and the soil resistivity for being difficult to determine originally also can be obtained accurately,
So that correction result is more accurate.
Embodiment 2
According to embodiments of the present invention, there is provided a kind of embodiment of the correcting device of zero-sequence impedance parameter.
Fig. 9 is a kind of schematic diagram of the correcting device of zero-sequence impedance parameter according to embodiments of the present invention, as shown in figure 9,
The device includes：
Acquisition module 91, after setting up at least one set of second transmission line of electricity around the first transmission line of electricity, obtains the
The transmission line information of one transmission line of electricity, the transmission line information and the first transmission line of electricity of every group of second transmission line of electricity and every group
Pitch information between second transmission line of electricity.
Alternatively, in the above embodiment of the present invention, transmission line information includes following one or more：Wire parameter,
Aerial earth wire parameter, shaft tower parameter, the equivalent zero sequence impedance of mains side, the equivalent zero sequence impedance of load-side, zero-sequence impedance parameter.
Specifically, above-mentioned wire parameter can include geometry distribution, type, resistance and the reactance of wire, it is above-mentioned
Aerial earth wire parameter can include geometry distribution, type, resistance and the reactance of ground wire, and above-mentioned shaft tower parameter can include tower
Rod-type formula.
In a kind of optional scheme, having run, parallel laying near old circuit (the first i.e. above-mentioned transmission line of electricity) is defeated
After electric line (the second i.e. above-mentioned transmission line of electricity) is such that old circuit periphery electromagnetic environment changes, following letter can be obtained
Breath：Former zero-sequence impedance parameter, wire parameter and the aerial earth wire parameter of old circuit, the new line with old circuit parallel laying are run
The equivalent zero sequence impedance of the wire parameter on road, aerial earth wire parameter, the equivalent zero sequence impedance of mains side and load-side, and it is new and old
The distance between circuit.
First processing module 93, for the transmission line information according to the first transmission line of electricity, every group of second transmission line of electricity
Pitch information between transmission line information and the first transmission line of electricity and every group of second transmission line of electricity, obtains the first transmission line of electricity
With the equivalent circuit of at least one set of second transmission line of electricity.
Second processing module 95, is carried out for the equivalent circuit to the first transmission line of electricity and at least one set of second transmission line of electricity
Equivalent process, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity.
In a kind of optional scheme, mutual inductance between new and old circuit, new can be calculated according to the above- mentioned information for getting
Circuit zero-sequence impedance parameter, new line two ends equivalence zero sequence impedance etc., so as to obtain the equivalent circuit of new and old circuit.To equivalent electricity
Road carries out decoupling abbreviation, and amendment has run the zero-sequence impedance parameter of old circuit, obtained calibration value (i.e. above-mentioned correction value).
By the above embodiment of the present invention, after setting up at least one set of second transmission line of electricity around the first transmission line of electricity,
Obtain transmission line information, the transmission line information and the first transmission line of electricity of every group of second transmission line of electricity of the first transmission line of electricity
And the pitch information between every group of second transmission line of electricity, transmission line information according to the first transmission line of electricity, every group second transmit electricity
Pitch information between the transmission line information of circuit and the first transmission line of electricity and every group of second transmission line of electricity, obtains first defeated
The equivalent circuit of electric line and at least one set of second transmission line of electricity, to the first transmission line of electricity and at least one set of second transmission line of electricity
Equivalent circuit carries out equivalent process, obtains the correction value of the zero-sequence impedance parameter of the first transmission line of electricity, so as to realize in circuit week
Enclose after electromagnetic environment change occurs and circuit Zero sequence parameter is modified, the power transmission line zero-sequence impedance parameter after calibration is more accurate
Really so that the Electrical power system analysis and computing result for being related to zero-sequence impedance parameter is more accurate.Easily mainly arrive, corrected
Journey does not carry out actual measurement, and the normal operation of circuit is not influenceed, solves and is joined by remeasuring zero sequence impedance in the prior art
Several modes are modified to zero-sequence impedance parameter, influence the technical problem of the normal power supply of transmission line of electricity.Therefore, by this hair
The scheme that bright above-described embodiment is provided, can reach and improve amendment precision, ensure the effect that transmission line of electricity normally runs.
Alternatively, in the above embodiment of the present invention, first processing module includes：
First treatment submodule, for shaft tower parameter and zero-sequence impedance parameter according to the first transmission line of electricity, obtains soil
Resistivity.
In a kind of optional scheme, can be anti-according to the shaft tower parameter and original zero-sequence impedance parameter for having run old circuit
Soil resistivity ρ below push away line curb line.
Second processing submodule, for the wire parameter according to the first transmission line of electricity, every group of second transmission line of electricity it is built on stilts
Ground wire parameter, the shaft tower parameter of the first transmission line of electricity, the shaft tower parameter of every group of second transmission line of electricity, the first transmission line of electricity and every group
Pitch information and soil resistivity between second transmission line of electricity, obtain every group of zero-sequence impedance parameter of the second transmission line of electricity with
And the first zero sequence mutual impedance parameter between transmission line of electricity and every group of second transmission line of electricity.
In a kind of optional scheme, can be according to the model of the wire for having run old circuit and parameter, aerial earth wire
Model and parameter, shaft tower parameter, the model and parameter of the wire of new line, the model of aerial earth wire and parameter, shaft tower parameter, newly
Spacing between old circuit, and the information such as the soil resistivity ρ that calculates of previous step, the zero sequence impedance calculated to new line are joined
Zero sequence mutual impedance parameter between several and new and old circuit.
3rd treatment submodule, for the zero-sequence impedance parameter according to the first transmission line of electricity, every group of second transmission line of electricity
Zero sequence mutual impedance parameter between zero-sequence impedance parameter, the first transmission line of electricity and every group of second transmission line of electricity, every group second transmit electricity
The equivalent zero sequence impedance of the mains side of circuit and every group of equivalent zero sequence impedance of the load-side of the second transmission line of electricity, obtain first
The equivalent circuit of transmission line of electricity and at least one set of second transmission line of electricity.
In a kind of optional scheme, can be according to the zero sequence for having run the former zero-sequence impedance parameter of old circuit, new line
The equivalent zero sequence impedance of the mains side of zero sequence mutual impedance parameter and new line between impedance parameter, new and old circuit and load
The equivalent zero sequence impedance of side, drafting obtains the equivalent circuit of new and old circuit.
Herein it should be noted that in theoretical calculation, as shown in figure 4, the earth can use the distance that locates below ground level
ForIdeal plane represent,Equal to the multiple penetration depth of plane wave, then penetration depth is again：Its
In, ρ is soil resistivity, and μ is soil magnetic conductivity, typically desirable space permeability μ0.The impedance of " wire i- ground return circuits " is：Wherein, GMRiIt is the geometrical mean radius of wire i, hiFor wire hitch point highly subtracts 2/3
Maximum sag.Impedance between " wire i- ground return circuits " and " wire k- ground return circuits " is：Obtain
Ground wire is eliminated after all wires and ground wire self-impedance and mutual impedance, the impedance matrix between each phase is obtained, then using symmetrical point
Change of variable obtains the positive sequence and zero sequence impedance of overhead transmission line.
By such scheme, due to make use of, relatively accurate first original circuit parameter is counter to push away soil resistivity, so that
The soil resistivity for being difficult to determine originally can accurately be obtained so that correction value is more accurate.
Alternatively, in the above embodiment of the present invention, Second processing module includes：
Fourth process submodule, for carrying out decoupling treatment to equivalent circuit, obtains the first circuit.
5th treatment submodule, for carrying out connection in series-parallel treatment to the first circuit, obtains second circuit.
6th treatment submodule, for the equivalent resistance according to second circuit, obtains the zero sequence resistance of the first transmission line of electricity
The correction value of anti-parameter.
In a kind of optional scheme, after the equivalent circuit for obtaining new and old circuit, two can be carried out to equivalent circuit
Decoupling Equivalent treatment between loop line road, you can to simplify to equivalent circuit Decoupling Equivalent first, obtain Decoupling Equivalent circuit (i.e.
The first above-mentioned circuit), connection in series-parallel equivalent predigesting then is carried out to Decoupling Equivalent circuit, obtain second circuit, then running
Nearby after parallel laying transmission line of electricity, the zero-sequence impedance parameter of old circuit can be calibrated to the equivalent electric of second circuit to old circuit
Resistance.
Alternatively, in the above embodiment of the present invention, one group of second transmission line of electricity is set up around the first transmission line of electricity
In the case of, the equivalent resistance of second circuit is：Wherein, ZX0It is the zero sequence of the first transmission line of electricity
Impedance parameter, ZY0It is the zero-sequence impedance parameter of the second transmission line of electricity, ZY10It is the equivalent zero sequence resistance of the mains side of the second transmission line of electricity
It is anti-, ZY20It is the equivalent zero sequence impedance of the load-side of the second transmission line of electricity, ZXYmFor the first transmission line of electricity and the second transmission line of electricity it
Between zero sequence mutual impedance parameter.
In a kind of optional scheme, one group of transmission line of electricity of parallel laying is being run near old circuit so that old circuit is all
Enclose after electromagnetic environment changes, can be according to by the equivalent resistance of second circuitAs old
The correction value of the zero-sequence impedance parameter of circuit.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in certain embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be by other
Mode is realized.Wherein, device embodiment described above is only schematical, such as division of described unit, Ke Yiwei
A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces
Connect, can be electrical or other forms.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be according to the actual needs selected to realize the purpose of this embodiment scheme.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is to realize in the form of SFU software functional unit and as independent production marketing or use
When, can store in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for being contributed to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used to so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment methods described of the invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of modification method of zero-sequence impedance parameter, it is characterised in that including：
After at least one set of second transmission line of electricity is set up around the first transmission line of electricity, the transmission of electricity of first transmission line of electricity is obtained
Line information, the transmission line information and first transmission line of electricity of every group of second transmission line of electricity and described every group second are transmitted electricity
Pitch information between circuit；
Transmission line information, the transmission line information of every group of second transmission line of electricity according to first transmission line of electricity and
Pitch information between first transmission line of electricity and every group of second transmission line of electricity, obtains first transmission line of electricity and institute
State the equivalent circuit of at least one set of second transmission line of electricity；
Equivalent circuit to first transmission line of electricity and at least one set of second transmission line of electricity carries out equivalent process, obtains institute
State the correction value of the zero-sequence impedance parameter of the first transmission line of electricity.
2. method according to claim 1, it is characterised in that the transmission line information includes following one or more：
Wire parameter, aerial earth wire parameter, shaft tower parameter, the equivalent zero sequence impedance of mains side, the equivalent zero sequence impedance of load-side, zero sequence
Impedance parameter.
3. method according to claim 2, it is characterised in that transmission line information according to first transmission line of electricity,
The transmission line information and first transmission line of electricity and every group of second transmission line of electricity of every group of second transmission line of electricity
Between pitch information, obtain the equivalent circuit of first transmission line of electricity and at least one set of second transmission line of electricity, including：
According to the shaft tower parameter and zero-sequence impedance parameter of first transmission line of electricity, soil resistivity is obtained；
Wire parameter, the aerial earth wire parameter of every group of second transmission line of electricity, described according to first transmission line of electricity
The shaft tower parameter of one transmission line of electricity, the shaft tower parameter of every group of second transmission line of electricity, first transmission line of electricity and described every
Pitch information and the soil resistivity between the second transmission line of electricity of group, obtain the zero sequence of every group of second transmission line of electricity
Zero sequence mutual impedance parameter between impedance parameter and first transmission line of electricity and every group of second transmission line of electricity；
Zero-sequence impedance parameter, zero-sequence impedance parameter, the institute of every group of second transmission line of electricity according to first transmission line of electricity
State zero sequence mutual impedance parameter, every group of second transmission line of electricity between the first transmission line of electricity and every group of second transmission line of electricity
Mains side equivalent zero sequence impedance and every group of second transmission line of electricity load-side equivalent zero sequence impedance, obtain described
The equivalent circuit of the first transmission line of electricity and at least one set of second transmission line of electricity.
4. method according to claim 2, it is characterised in that to first transmission line of electricity and described at least one set of second
The equivalent circuit of transmission line of electricity carries out equivalent process, obtains the correction value of the zero-sequence impedance parameter of first transmission line of electricity, bag
Include：
Decoupling treatment is carried out to the equivalent circuit, the first circuit is obtained；
Connection in series-parallel treatment is carried out to first circuit, second circuit is obtained；
According to the equivalent resistance of the second circuit, the correction value of the zero-sequence impedance parameter of first transmission line of electricity is obtained.
5. method according to claim 4, it is characterised in that set up around first transmission line of electricity one group second it is defeated
In the case of electric line, the equivalent resistance of the second circuit is：Wherein, ZX0It is described
The zero-sequence impedance parameter of one transmission line of electricity, ZY0It is the zero-sequence impedance parameter of second transmission line of electricity, ZY10It is the described second transmission of electricity
The equivalent zero sequence impedance of the mains side of circuit, ZY20It is the equivalent zero sequence impedance of the load-side of second transmission line of electricity, ZXYmFor
Zero sequence mutual impedance parameter between first transmission line of electricity and second transmission line of electricity.
6. a kind of correcting device of zero-sequence impedance parameter, it is characterised in that including：
Acquisition module, after setting up at least one set of second transmission line of electricity around the first transmission line of electricity, obtains described first
The transmission line information of transmission line of electricity, the transmission line information of every group of second transmission line of electricity and first transmission line of electricity and institute
State the pitch information between every group of second transmission line of electricity；
First processing module, for the transmission line information according to first transmission line of electricity, every group of second transmission line of electricity
Transmission line information and the pitch information between first transmission line of electricity and every group of second transmission line of electricity, obtain institute
State the equivalent circuit of the first transmission line of electricity and at least one set of second transmission line of electricity；
Second processing module, enters for the equivalent circuit to first transmission line of electricity and at least one set of second transmission line of electricity
Row equivalent process, obtains the correction value of the zero-sequence impedance parameter of first transmission line of electricity.
7. device according to claim 6, it is characterised in that the transmission line information includes following one or more：
Wire parameter, aerial earth wire parameter, shaft tower parameter, the equivalent zero sequence impedance of mains side, the equivalent zero sequence impedance of load-side, zero sequence
Impedance parameter.
8. device according to claim 7, it is characterised in that the first processing module includes：
First treatment submodule, for shaft tower parameter and zero-sequence impedance parameter according to first transmission line of electricity, obtains soil
Resistivity；
Second processing submodule, for the wire parameter according to first transmission line of electricity, every group of second transmission line of electricity
Aerial earth wire parameter, the shaft tower parameter of first transmission line of electricity, the shaft tower parameter of every group of second transmission line of electricity, described
Pitch information and the soil resistivity between one transmission line of electricity and every group of second transmission line of electricity, obtain described every group
Between the zero-sequence impedance parameter of the second transmission line of electricity and first transmission line of electricity and every group of second transmission line of electricity zero
Sequence mutual impedance parameter；
3rd treatment submodule, for the zero-sequence impedance parameter according to first transmission line of electricity, every group of second power transmission line
Zero sequence mutual impedance parameter between the zero-sequence impedance parameter on road, first transmission line of electricity and every group of second transmission line of electricity,
The load-side of the equivalent zero sequence impedance of the mains side of every group of second transmission line of electricity and every group of second transmission line of electricity
Equivalent zero sequence impedance, obtains the equivalent circuit of first transmission line of electricity and at least one set of second transmission line of electricity.
9. device according to claim 7, it is characterised in that the Second processing module includes：
Fourth process submodule, for carrying out decoupling treatment to the equivalent circuit, obtains the first circuit；
5th treatment submodule, for carrying out connection in series-parallel treatment to first circuit, obtains second circuit；
6th treatment submodule, for the equivalent resistance according to the second circuit, obtains the zero of first transmission line of electricity
The correction value of sequence impedance parameter.
10. device according to claim 9, it is characterised in that set up a group second around first transmission line of electricity
In the case of transmission line of electricity, the equivalent resistance of the second circuit is：Wherein, ZX0For described
The zero-sequence impedance parameter of the first transmission line of electricity, ZY0It is the zero-sequence impedance parameter of second transmission line of electricity, ZY10For described second defeated
The equivalent zero sequence impedance of the mains side of electric line, ZY20It is the equivalent zero sequence impedance of the load-side of second transmission line of electricity, ZXYm
It is the zero sequence mutual impedance parameter between first transmission line of electricity and second transmission line of electricity.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173971A (en) * | 2005-09-09 | 2008-05-07 | 武汉大学 | Zero sequence parameter live line measurement device of mutual inductance circuit |
| CN102841280A (en) * | 2012-09-06 | 2012-12-26 | 中国能源建设集团广东省电力设计研究院 | Method for simulating lightning trip-out rates of 500kV transmission line with four circuits on same tower |
| CN103267926A (en) * | 2013-03-19 | 2013-08-28 | 中国石油大学(华东) | Data-gram (DG)-containing power distribution network fault distance measurement for fault feature matching based on differential evolution algorithm |
| CN106230013A (en) * | 2016-05-20 | 2016-12-14 | 中国南方电网有限责任公司 | HVDC different modes runs lower AC compounent along circuit transmission analytic method and modeling |
-
2016
- 2016-12-13 CN CN201611151073.6A patent/CN106772179B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173971A (en) * | 2005-09-09 | 2008-05-07 | 武汉大学 | Zero sequence parameter live line measurement device of mutual inductance circuit |
| CN102841280A (en) * | 2012-09-06 | 2012-12-26 | 中国能源建设集团广东省电力设计研究院 | Method for simulating lightning trip-out rates of 500kV transmission line with four circuits on same tower |
| CN103267926A (en) * | 2013-03-19 | 2013-08-28 | 中国石油大学(华东) | Data-gram (DG)-containing power distribution network fault distance measurement for fault feature matching based on differential evolution algorithm |
| CN106230013A (en) * | 2016-05-20 | 2016-12-14 | 中国南方电网有限责任公司 | HVDC different modes runs lower AC compounent along circuit transmission analytic method and modeling |
Non-Patent Citations (1)
| Title |
|---|
| 邓春等: "长距离双回输电线路零序互阻抗测量中的数据分析", 《华北电力技术》 * |
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