CN107834527A - Half-wave power transmission line power fluctuates the optimal control method and device of overvoltage - Google Patents

Half-wave power transmission line power fluctuates the optimal control method and device of overvoltage Download PDF

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Publication number
CN107834527A
CN107834527A CN201711048811.9A CN201711048811A CN107834527A CN 107834527 A CN107834527 A CN 107834527A CN 201711048811 A CN201711048811 A CN 201711048811A CN 107834527 A CN107834527 A CN 107834527A
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China
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arrester
overvoltage
power transmission
strategy
wave power
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CN201711048811.9A
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CN107834527B (en
Inventor
张媛媛
王平
王毅
班连庚
项祖涛
韩彬
宋瑞华
郑彬
杨大业
宋修友
张翼
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State Grid Corp of China SGCC
Beijing Jiaotong University
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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State Grid Corp of China SGCC
Beijing Jiaotong University
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The invention provides the optimal control method and device of a kind of half-wave power transmission line power fluctuation overvoltage, half-wave power transmission line power fluctuation overvoltage is defined first, and the characteristic of power swing overvoltage is determined, also finally realize the optimal control of half-wave power transmission line power fluctuation overvoltage by aiding in uniform configuration strategy and the differentiation configuration strategy of control strategy, arrester simultaneously.Can effectively solve half-wave power transmission system power fluctuation overvoltage problem, and half-wave power transmission system safety operation can be ensured.The auxiliary control strategy of the present invention can shorten the duration of power swing overvoltage, and reduce the amplitude of power swing overvoltage, so as to reduce the absorption energy of arrester along half-wave power transmission circuit, so that Allocation of Lightning Arrester number is reduced along half-wave power transmission circuit, not only the configuration to arrester realizes optimization, and reduces the deployment cost of arrester.

Description

Half-wave power transmission line power fluctuates the optimal control method and device of overvoltage
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of half-wave power transmission line power fluctuation overvoltage Optimal control method and device.
Background technology
Half-wave power transmission technology (half wave-length AC transmission, HWACT) refers to the electric of transmission of electricity Distance is close to a power frequency half-wavelength, i.e., the three-phase alternating current transmission of electricity of about 3000km (50Hz) or about 2600km (60Hz) overlength distance Technology, self-balancing that all fronts are idle, without installation reactive-load compensation equipment, without setting intermediate switching station.Its ability to transmit electricity is strong, economical Property and reliability preferably, can realize remote synchronous network.With the propulsion of global energy internet, half-wave transmission of electricity is used as one Kind is got the attention suitable for the intercontinental transportation scheme of extensive electric power.
But the engineer applied of half-wave power transmission, which it is also highly desirable to have, solves some such as security and stability control, overvoltage and secondary arc currents The suppression of the technical problem of suppression, relay protection scheme etc., wherein overvoltage is to restrict the key issue of half-wave power transmission application One of.Due to the special line construction of half-wave power transmission circuit, there is very big difference the characteristics of making its overvoltage with conventional electrical power lines road It is different.Under the fault conditions such as single-phase earthing, two relative ground circuits, three-phase ground short circuit and phase fault, half-wave power transmission circuit Half-wavelength characteristic destroyed, in the presence of capacitive rise effect and parametric resonance, failure phase and it is neighbouring sound mutually excite it is temporary State overvoltage problem is extremely prominent, and catastrophe failure point is the emphasis that half-wave power transmission line over-voltage suppresses up to several times.
Half-wave power transmission circuit occur overvoltage half-wave power transmission system can be caused to be unable to safe operation, at present by The overvoltage that half-wavelength transmission line of electricity occurs in arrester is installed on half-wave power transmission circuit additional to suppress, but due to half-wavelength The special relationship along line voltage and its own transimission power of transmission line of electricity, also in the presence of another overvoltage phenomenon, the suppression Measure can not solve half-wave power transmission circuit and this kind of overvoltage problem occurs.On the other hand, in half-wave power transmission line areas In the case of failure, it is possible that the power swing of higher magnitude, causes half-wavelength ac transmission system on half-wave power transmission circuit The transient stability limit and ability to transmit electricity of system reduce.
The content of the invention
In order to which the overvoltage for overcoming the above-mentioned circuit of half-wave power transmission in the prior art to hinder appearance for some reason causes half-wave power transmission System is unable to the deficiency of safe operation, and the present invention provides a kind of optimal control side of half-wave power transmission line power fluctuation overvoltage Method and device, the auxiliary control strategy of half-wave power transmission circuit and the uniform configuration strategy of arrester are first determined, and determine to aid in The absorption maximum energy of arrester under control strategy and uniform configuration strategy, plan is then configured according to auxiliary control strategy and uniformly Slightly descend the absorption maximum energy of arrester to determine the differentiation configuration strategy of arrester along half-wave power transmission circuit, and determine auxiliary The power swing overvoltage of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy, power swing overvoltage is helped to hold Continuous time and the absorption maximum energy of arrester, finally judge half-wave power transmission under auxiliary control strategy and differentiation configuration strategy Whether the absorption maximum energy of the power swing overvoltage of circuit, the duration of power swing overvoltage and arrester is simultaneously full Sufficient power fluctuation limit requirement, is optimized if meet simultaneously to differentiation configuration strategy, otherwise to differentiation configuration strategy It is modified, realizes the optimal control to half-wavelength transmission line of electricity power swing overvoltage.
In order to realize foregoing invention purpose, the present invention adopts the following technical scheme that：
On the one hand, the present invention provides a kind of optimal control method of half-wave power transmission line power fluctuation overvoltage, including：
It is determined that the half-wave power transmission circuit pre-set auxiliary control strategy and uniform configuration strategy under arrester most It is big to absorb energy；
Half-wave power transmission line is determined according to the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy The differentiation configuration strategy of curb line arrester, and determine to aid in half-wavelength power transmission line under control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage on road, the duration of power swing overvoltage and arrester；
Judge the power swing overvoltage of half-wavelength transmission line of electricity, power under auxiliary control strategy and differentiation configuration strategy Fluctuate the duration of overvoltage and whether the absorption maximum energy of arrester meets power fluctuation limit requirement simultaneously, if simultaneously Satisfaction is then optimized to differentiation configuration strategy, and otherwise differentiation configuration strategy is modified；
The auxiliary control strategy includes：
It is defeated by very first time interval, excision sending end after singlephase earth fault failure occurs for the half-wave power transmission circuit Electrical power；And sending end transmitted power is put into again by the second time interval after singlephase earth fault fault clearance.
The power swing overvoltage of the half-wave power transmission circuit is included in the case of being broken down on half-wave power transmission circuit When caused power swing exceedes natural power, the overvoltage that occurs on half-wave power transmission circuit；
The amplitude of the power swing overvoltage is proportional to the ratio of power swing and half-wave power transmission circuit natural power；
The duration of the power swing overvoltage and the power swing time consistency of half-wave power transmission circuit；
If failure is single-phase transient earthing failure, the failure process of single-phase transient earthing failure include process during failure, Reclosing process and rocking process.
The uniformly configuration strategy determines according to procedure below：
Half-wave power transmission circuit is evenly dividing for multiple line units, and at the end of each line unit with regular length The arrester of point identical group of number of installing.
The absorption maximum energy of arrester determines according to procedure below under the auxiliary control strategy and uniform configuration strategy：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy.
The absorption maximum energy according to arrester under auxiliary control strategy and uniform configuration strategy determines that half-wavelength is defeated The differentiation configuration strategy of arrester includes along electric line：
The 80% of arrester absorption energy capability is no more than with the absorption maximum energy of single group arrester, each taken shelter from the thunder It is principle that device installation site, which at most installs two groups of arresters and preferentially installs arrester in circuit cell end, in each circuit The terminal point of unit and internal zinc oxide surge arresters.
The terminal point of the line unit and internal zinc oxide surge arresters include：
The terminal point of line unit and the installation number of internal lightning arrester are determined, including：
If the terminal point of line unit and internal installation m group arresters altogether, the maximum of arrester in uniform configuration strategy Absorption energy is EU, work as EU＜ 0.8EMWhen, m=1；Work as EU≥0.8EMWhen, m=[EU/0.8EM], [] represents round, Wherein, EMEnergy capability is absorbed for arrester；
The terminal point of line unit and the installation site of internal lightning arrester are determined, including：
During m=1, one group of arrester is installed in circuit cell end end points；
During m=2, two groups of arresters are installed in circuit cell end end points；
During m >=3, line unit terminal point installs two groups of arresters, and remaining Allocation of Lightning Arrester exists in such a way Inside line unit：
Remaining Allocation of Lightning Arrester be d, 2d with line unit terminal point distance ..., kd opening position, wherein, k is Natural number, d represents the span of half-wave power transmission circuit, when m is even number,When m is odd number,
It is described determine auxiliary control strategy and differentiation configuration strategy under half-wavelength transmission line of electricity power swing overvoltage, The duration of power swing overvoltage and the absorption maximum energy of arrester include：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines power swing overvoltage, the power swing mistake of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy The duration of voltage and the absorption maximum energy of arrester.
The power fluctuation limit requires to include：
1) the not super 1.4p.u. of the power swing overvoltage of substation line side, and the power swing mistake of substation line side The duration of voltage is not more than 0.5s；
2) the power swing Overvoltage Amplitude of half-wave power transmission circuit and the power swing of half-wave power transmission circuit are excessively electric The duration of pressure is satisfied by arrester temporary overvoltage tolerance performance；
3) the absorption maximum energy of arrester meets that arrester absorbs energy capability along half-wave power transmission circuit.
It is described differentiation configuration strategy is optimized including：
If arrester installation site is L on half-wave power transmission circuit1,…,Lh,…,LH, single group arrester absorption maximum energy Measure as Eh, h=1,2 ..., H, H represent half-wave power transmission circuit on arrester installation site sum；
If Eh＜ 0.5EMAnd line unit terminal point and internal shared at least two groups of arresters, according to first from line unit The principle for reducing by one group of arrester every time to line unit end is held to update differentiation configuration strategy, and according to half-wave power transmission system The electromagnetic transient simulation model of system, half-wavelength power transmission line under the differentiation configuration strategy after renewal is determined with reference to auxiliary control strategy The absorption maximum energy of the power swing overvoltage on road, the duration of power swing overvoltage and arrester, and judge to update The power swing overvoltage of half-wavelength transmission line of electricity under differentiation configuration strategy afterwards, the duration of power swing overvoltage and Whether the absorption maximum energy of arrester meets power fluctuation limit requirement simultaneously, if so, the differentiation after renewal is configured Strategy is as final Allocation of Lightning Arrester strategy, otherwise using the differentiation configuration strategy not updated as final Allocation of Lightning Arrester Strategy；
If 0.5EM≤Eh≤EMAnd aid in the power waves of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of dynamic overvoltage, the duration of power swing overvoltage and arrester meets that power fluctuation limit will simultaneously Ask, then using differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
It is described differentiation configuration strategy is modified including：
If the terminal point of line unit and the installation site of internal lightning arrester are L1,…,Li,…,LN, i=1,2 ..., N, N represent arrester installation site sum, L in line unitiRepresent i-th of installation site；
If LiClose to L1, then in L1And close to line unit head end and and L1Distance increases for d opening position according to each The principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength is defeated under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of electric line, the duration of power swing overvoltage and arrester meets simultaneously Power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy；
If LiClose to LN, then close to half-wave power transmission line end and and LNDistance increases for d opening position according to each The principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength is defeated under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of electric line, the duration of power swing overvoltage and arrester meets simultaneously Power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
On the other hand, the present invention provides a kind of optimal control device of half-wave power transmission line power fluctuation overvoltage, bag Include：
First determining module, the auxiliary control strategy of the half-wave power transmission circuit for determining to pre-set configure with uniform The absorption maximum energy of the lower arrester of strategy；
Second determining module, for the absorption maximum energy according to arrester under auxiliary control strategy and uniform configuration strategy The differentiation configuration strategy of arrester along half-wave power transmission circuit is determined, and determines to aid in control strategy and differentiation configuration plan Slightly descend power swing overvoltage, the duration of power swing overvoltage and the absorption maximum of arrester of half-wavelength transmission line of electricity Energy；
Judge module, for judging the power waves of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy Whether the absorption maximum energy of dynamic overvoltage, the duration of power swing overvoltage and arrester meets that power swing limits simultaneously System is required, differentiation configuration strategy is optimized if meet simultaneously, otherwise differentiation configuration strategy is modified；
The auxiliary control strategy includes：
It is defeated by very first time interval, excision sending end after singlephase earth fault failure occurs for the half-wave power transmission circuit Electrical power；And sending end transmitted power is put into again by the second time interval after singlephase earth fault fault clearance.
The power swing overvoltage of the half-wave power transmission circuit is included in the case of being broken down on half-wave power transmission circuit When caused power swing exceedes natural power, the overvoltage that occurs on half-wave power transmission circuit；
The amplitude of the power swing overvoltage is proportional to the ratio of power swing and half-wave power transmission circuit natural power；
The duration of the power swing overvoltage and the power swing time consistency of half-wave power transmission circuit；
If failure is single-phase transient earthing failure, the failure process of single-phase transient earthing failure include process during failure, Reclosing process and rocking process.
First determining module determines uniform configuration strategy according to procedure below：
Half-wave power transmission circuit is evenly dividing for multiple line units, and at the end of each line unit with regular length The arrester of point identical group of number of installing.
First determining module determines arrester under auxiliary control strategy and uniform configuration strategy according to procedure below Absorption maximum energy：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy.
Second determining module according to auxiliary control strategy and uniform configuration strategy under arrester absorption maximum energy, And the differentiation configuration strategy of arrester along half-wave power transmission circuit is determined according to procedure below：
The 80% of arrester absorption energy capability is no more than with the absorption maximum energy of single group arrester, each taken shelter from the thunder It is principle that device installation site, which at most installs two groups of arresters and preferentially installs arrester in circuit cell end, in each circuit The terminal point of unit and internal zinc oxide surge arresters.
Second determining module is according to terminal point of the procedure below in line unit and internal zinc oxide surge arresters：
The terminal point of line unit and the installation number of internal lightning arrester are determined, including：
If the terminal point of line unit and internal installation m group arresters altogether, the maximum of arrester in uniform configuration strategy Absorption energy is EU, work as EU＜ 0.8EMWhen, m=1；Work as EU≥0.8EMWhen, m=[EU/0.8EM], [] represents round, Wherein, EMEnergy capability is absorbed for arrester；
The terminal point of line unit and the installation site of internal lightning arrester are determined, including：
During m=1, one group of arrester is installed in circuit cell end end points；
During m=2, two groups of arresters are installed in circuit cell end end points；
During m >=3, line unit terminal point installs two groups of arresters, and remaining Allocation of Lightning Arrester exists in such a way Inside line unit：
Remaining Allocation of Lightning Arrester be d, 2d with line unit terminal point distance ..., kd opening position, wherein, k is Natural number, d represents the span of half-wave power transmission circuit, when m is even number,When m is odd number,
Second determining module determines half-wavelength under auxiliary control strategy and differentiation configuration strategy according to procedure below The absorption maximum energy of the power swing overvoltage of transmission line of electricity, the duration of power swing overvoltage and arrester：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines power swing overvoltage, the power swing mistake of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy The duration of voltage and the absorption maximum energy of arrester.
The judge module is used to determine following power fluctuation limit requirement：
1) the not super 1.4p.u. of the power swing overvoltage of substation line side, and the power swing mistake of substation line side The duration of voltage is not more than 0.5s；
2) the power swing Overvoltage Amplitude of half-wave power transmission circuit and the power swing of half-wave power transmission circuit are excessively electric The duration of pressure is satisfied by arrester temporary overvoltage tolerance performance；
3) the absorption maximum energy of arrester meets that arrester absorbs energy capability along half-wave power transmission circuit.
3rd determining module optimizes according to procedure below to differentiation configuration strategy：
If arrester installation site is L on half-wave power transmission circuit1,…,Lh,…,LH, single group arrester absorption maximum energy Measure as Eh, h=1,2 ..., H, H represent half-wave power transmission circuit on arrester installation site sum；
If Eh＜ 0.5EMAnd line unit terminal point and internal shared at least two groups of arresters, according to first from line unit The principle for reducing by one group of arrester every time to line unit end is held to update differentiation configuration strategy, and according to half-wave power transmission system The electromagnetic transient simulation model of system, half-wavelength power transmission line under the differentiation configuration strategy after renewal is determined with reference to auxiliary control strategy The absorption maximum energy of the power swing overvoltage on road, the duration of power swing overvoltage and arrester, and judge to update The power swing overvoltage of half-wavelength transmission line of electricity under differentiation configuration strategy afterwards, the duration of power swing overvoltage and Whether the absorption maximum energy of arrester meets power fluctuation limit requirement simultaneously, if so, the differentiation after renewal is configured Strategy is as final Allocation of Lightning Arrester strategy, otherwise using the differentiation configuration strategy not updated as final Allocation of Lightning Arrester Strategy；
If 0.5EM≤Eh≤EMAnd aid in the power waves of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of dynamic overvoltage, the duration of power swing overvoltage and arrester meets that power fluctuation limit will simultaneously Ask, then using differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
3rd determining module is modified according to procedure below to differentiation configuration strategy：
If the terminal point of line unit and the installation site of internal lightning arrester are L1,…,Li,…,LN, i=1,2 ..., N, N represent arrester installation site sum, L in line unitiRepresent i-th of installation site；
If LiClose to L1, then in L1And close to line unit head end and and L1Distance increases for d opening position according to each The principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength is defeated under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of electric line, the duration of power swing overvoltage and arrester meets simultaneously Power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy；
If LiClose to LN, then close to half-wave power transmission line end and and LNDistance increases for d opening position according to each The principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength is defeated under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of electric line, the duration of power swing overvoltage and arrester meets simultaneously Power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
Compared with immediate prior art, technical scheme provided by the invention has the advantages that：
In the optimal control method of half-wave power transmission line power fluctuation overvoltage provided by the invention, first determine to set in advance The absorption maximum energy of arrester, then basis under the auxiliary control strategy for the half-wave power transmission circuit put and uniform configuration strategy The absorption maximum energy of arrester determines arrester along half-wave power transmission circuit under auxiliary control strategy and uniform configuration strategy Differentiation configuration strategy, and determine to aid in the power swing of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of overvoltage, the duration of power swing overvoltage and arrester, finally judge auxiliary control strategy and The power swing overvoltage of half-wavelength transmission line of electricity under differentiation configuration strategy, duration of power swing overvoltage and lightning-arrest Whether the absorption maximum energy of device meets power fluctuation limit requirement simultaneously, and differentiation configuration strategy is carried out if meet simultaneously Optimization, is otherwise modified to differentiation configuration strategy, realizes the optimization control to half-wavelength transmission line of electricity power swing overvoltage System；
The optimal control device of half-wave power transmission line power fluctuation overvoltage provided by the invention includes pre- for determining The of the absorption maximum energy of arrester under the auxiliary control strategy of the half-wave power transmission circuit first set and uniform configuration strategy One determining module, for determine auxiliary control strategy and differentiation configuration strategy under half-wavelength transmission line of electricity power swing it is excessively electric Pressure, the second determining module of absorption maximum energy of the duration of power swing overvoltage and arrester and auxiliary for judging The power swing overvoltage of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy, power swing overvoltage is helped to hold Whether the absorption maximum energy of continuous time and arrester meets the judge module of power fluctuation limit requirement simultaneously, realizes to half-wave The optimal control of long power transmission line power swing overvoltage；
The optimal control method of half-wave power transmission line power fluctuation overvoltage provided by the invention defines half-wave first Long power transmission line power swing overvoltage, and it is determined that amplitude of the power swing overvoltage including power swing overvoltage is proportional to Power swing and the ratio of half-wave power transmission circuit natural power and the duration of power swing overvoltage and half-wavelength are defeated Characteristic of both the power swing time consistency of electric line, the research to half-wavelength transmission line of electricity provide basis；
Power swing limit in the optimal control method of half-wave power transmission line power fluctuation overvoltage provided by the invention System requires to include the not super 1.4p.u. of power swing overvoltage of substation line side and the power swing of substation line side is excessively electric The duration of pressure is no more than 0.5s, the power swing Overvoltage Amplitude of half-wave power transmission circuit and half-wave power transmission circuit The duration of power swing overvoltage is satisfied by along arrester temporary overvoltage tolerance performance and half-wave power transmission circuit The absorption maximum energy of arrester meets that arrester absorbs energy capability totally three aspects, is the excellent of power swing overvoltage Change control and provide basis for estimation；
The optimal control method of half-wave power transmission line power fluctuation overvoltage provided by the invention can effectively solve half-wave Long transmission system power swing overvoltage problem, and half-wave power transmission system safety operation can be ensured, and meanwhile it is defeated for half-wavelength The suppression of electric line power swing overvoltage provides foundation and basis；
It is defeated that the optimal control method of half-wave power transmission line power fluctuation overvoltage provided by the invention solves half-wavelength New overvoltage (i.e. the power swing overvoltage of half-wave power transmission circuit) technical barrier that power technology faces, half-wavelength is exchanged The implementation of technology of transmission of electricity experimental project provides strong technical support；
Auxiliary control plan in the optimal control method of half-wave power transmission line power fluctuation overvoltage provided by the invention Summary can shorten the duration of power swing overvoltage, and reduce the amplitude of power swing overvoltage, defeated so as to reduce half-wavelength The absorption energy of arrester along electric line so that Allocation of Lightning Arrester number is reduced along half-wave power transmission circuit, not only to keeping away The configuration of thunder device realizes optimization, and reduces the deployment cost of arrester.
Brief description of the drawings
Fig. 1 is the optimal control method flow chart of half-wave power transmission line power fluctuation overvoltage in the embodiment of the present invention 1；
Fig. 2 is that single-phase earthing transient fault sequential and process signal occur for half-wave power transmission circuit in the embodiment of the present invention 1 Figure；
Fig. 3 is half-wave power transmission system wiring schematic diagram in the embodiment of the present invention 2；
Fig. 4 is that the single-phase transient earthing failure process of extra-high voltage half-wave power transmission circuit is sound mutually first in the embodiment of the present invention 2 Hold three phases power waveform figure；
Fig. 5 is UHV transmission half-wave power transmission circuit in single-phase transient earthing failure process in the embodiment of the present invention 2 Power swing overvoltage distribution character schematic diagram；
Fig. 6 is that UHV transmission half-wave power transmission circuit is good in single-phase transient earthing failure process in the embodiment of the present invention 2 Three phases power swing over-voltage waveform figure in the middle part of full phase line；
Fig. 7 is arrester along UHV transmission half-wave power transmission circuit under uniform configuration strategy in the embodiment of the present invention 2 Absorption maximum power distribution properties schematic diagram；
Fig. 8 is to aid under control strategy and differentiation configuration strategy extra-high voltage partly to transmit electricity wavelength line in the embodiment of the present invention 2 Curb line line unit needs to configure arrester quantity schematic diagram；
Fig. 9 is the 10th circuit list under the line located configuration strategy of extra-high voltage half-wave power transmission in the embodiment of the present invention 2 First 4 groups of Allocation of Lightning Arrester strategy schematic diagrames；
Figure 10 is the 12nd circuit list under the line located configuration strategy of extra-high voltage half-wave power transmission in the embodiment of the present invention 2 First 3 groups of Allocation of Lightning Arrester strategy schematic diagrames；
Figure 11 is that extra-high voltage half-wave power transmission line under control strategy and differentiation configuration strategy is aided in the embodiment of the present invention 2 The power swing over-voltage waveform figure on road；
Figure 12 is that extra-high voltage half-wave power transmission line under control strategy and differentiation configuration strategy is aided in the embodiment of the present invention 2 Curb line arrester absorption maximum energy profile；
Figure 13 is the differentiation configuration strategy after optimizing in the embodiment of the present invention 2 and extra-high voltage half-wave under auxiliary control strategy The power swing over-voltage waveform figure of long power transmission line；
Figure 14 is the differentiation configuration strategy after optimizing in the embodiment of the present invention 2 and extra-high voltage half-wave under auxiliary control strategy Arrester absorption maximum energy profile along long power transmission line.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
The embodiment of the present invention 1 provides a kind of optimal control method of half-wave power transmission line power fluctuation overvoltage, tool Body flow chart is as shown in figure 1, detailed process is as follows：
S101：It is determined that arrester under the auxiliary control strategy of the half-wave power transmission circuit pre-set and uniform configuration strategy Absorption maximum energy；
S102：Determine that half-wavelength is defeated according to the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy The differentiation configuration strategy of arrester along electric line, and determine to aid in half-wavelength under control strategy and differentiation configuration strategy defeated The absorption maximum energy of the power swing overvoltage of electric line, the duration of power swing overvoltage and arrester；
S103：Judge that the power swing of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy is excessively electric Whether the absorption maximum energy of pressure, the duration of power swing overvoltage and arrester meets that power fluctuation limit will simultaneously Ask, differentiation configuration strategy is optimized if meet simultaneously, otherwise differentiation configuration strategy is modified.
The power swing overvoltage of above-mentioned half-wave power transmission circuit includes the situation that broken down on half-wave power transmission circuit When power swing caused by lower exceedes natural power, the overvoltage that occurs on half-wave power transmission circuit；
The amplitude of above-mentioned power swing overvoltage is proportional to the ratio of power swing and half-wave power transmission circuit natural power；
The duration of above-mentioned power swing overvoltage and the power swing time consistency of half-wave power transmission circuit；
If failure is single-phase transient earthing failure, the failure process of single-phase transient earthing failure include process during failure, Single-phase earthing transient fault sequential and process such as Fig. 2 occur for reclosing process and rocking process, specific half-wave power transmission circuit It is shown, the t in Fig. 20Singlephase earth fault moment, t occurs for half-wave power transmission circuitB1For the failure phase circuit breaker trip moment, tB2For failure phase breaker Reclosing Instant.
Above-mentioned S101 specifically includes following steps：
1st, the auxiliary control strategy of following half-wave power transmission circuit is determined：
Half-wave power transmission circuit is in the t shown in Fig. 20Singlephase earth fault failure occurs for the moment, by very first time interval TC1(TC1＜ tB2-tB1), cut off sending end transmitted power；After singlephase earth fault fault clearance, then by the second time interval TC2, sending end transmitted power is put into again, it is necessary to which explanation is that the sending end transmitted power put into again and the sending end cut off before are defeated Electrical power is identical.
2nd, the uniform configuration strategy of arrester along following half-wave power transmission circuit is determined：
Half-wave power transmission circuit is evenly dividing for multiple line units, and at the end of each line unit with regular length The arrester of point identical group of number of installing；
3rd, the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy is determined according to procedure below：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy.
Above-mentioned S102 specifically includes following steps：
1st, half-wave power transmission is determined according to the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy The differentiation configuration strategy of arrester, detailed process are as follows along circuit：
The 80% of arrester absorption energy capability is no more than with the absorption maximum energy of single group arrester, each taken shelter from the thunder It is principle that device installation site, which at most installs two groups of arresters and preferentially installs arrester in circuit cell end, in each circuit The detailed process of the terminal point of unit and internal zinc oxide surge arresters, the terminal point of line unit and internal zinc oxide surge arresters is such as Under：
1) terminal point of line unit and the installation number of internal lightning arrester are determined, including：
If the terminal point of line unit and internal installation m group arresters altogether, the maximum of arrester in uniform configuration strategy Absorption energy is EU, work as EU＜ 0.8EMWhen, m=1；Work as EU≥0.8EMWhen, m=[EU/0.8EM], [] represents round, Wherein, EMEnergy capability is absorbed for arrester；
2) terminal point of line unit and the installation site of internal lightning arrester are determined, including：
During m=1, one group of arrester is installed in circuit cell end end points；
During m=2, two groups of arresters are installed in circuit cell end end points；
During m >=3, line unit terminal point installs two groups of arresters, and remaining Allocation of Lightning Arrester exists in such a way Inside line unit：
Remaining Allocation of Lightning Arrester be d, 2d with line unit terminal point distance ..., kd opening position, wherein, k is Natural number, d represents the span of half-wave power transmission circuit, when m is even number,When m is odd number,
2nd, the power of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy is determined according to following processes Fluctuate overvoltage, the duration of power swing overvoltage and the absorption maximum energy of arrester：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines power swing overvoltage, the power swing mistake of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy The duration of voltage and the absorption maximum energy of arrester.
Above-mentioned S103 specifically includes following steps：
1st, it is defined below power fluctuation limit requirement：
1) the not super 1.4p.u. of the power swing overvoltage of substation line side, and the power swing mistake of substation line side The duration of voltage is not more than 0.5s；
2) the power swing Overvoltage Amplitude of half-wave power transmission circuit and the power swing of half-wave power transmission circuit are excessively electric The duration of pressure is satisfied by arrester temporary overvoltage tolerance performance；
4) the absorption maximum energy of arrester meets that arrester absorbs energy capability along half-wave power transmission circuit.
2nd, power swing overvoltage, the power waves of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy are aided in In the case of the duration of dynamic overvoltage and the absorption maximum energy of arrester meet power fluctuation limit requirement, under simultaneously Process is stated to optimize differentiation configuration strategy：
If arrester installation site is L on half-wave power transmission circuit1,…,Lh,…,LH, single group arrester absorption maximum energy Measure as Eh, h=1,2 ..., H, H represent half-wave power transmission circuit on arrester installation site sum；It is specifically divided into following two Aspect：
If 1) Eh＜ 0.5EMAnd line unit terminal point and internal shared at least two groups of arresters, according to from line unit The principle that head end reduces by one group of arrester to line unit end every time updates differentiation configuration strategy, and according to half-wave power transmission The electromagnetic transient simulation model of system, half-wave power transmission under the differentiation configuration strategy after renewal is determined with reference to auxiliary control strategy The absorption maximum energy of the power swing overvoltage of circuit, the duration of power swing overvoltage and arrester, and judge more The power swing overvoltage of half-wavelength transmission line of electricity, the duration of power swing overvoltage under differentiation configuration strategy after new Whether meet power fluctuation limit requirement simultaneously with the absorption maximum energy of arrester, if so, the differentiation after renewal is matched somebody with somebody Strategy is put as final Allocation of Lightning Arrester strategy, otherwise matches somebody with somebody the differentiation configuration strategy not updated as final arrester Put strategy；
If 2) 0.5EM≤Eh≤EMAnd aid in the power of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of fluctuation overvoltage, the duration of power swing overvoltage and arrester meets power fluctuation limit simultaneously It is required that then using differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
3rd, power swing overvoltage, the power waves of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy are aided in In the case of the duration of dynamic overvoltage and the absorption maximum energy of arrester can not meet power fluctuation limit requirement simultaneously, press Differentiation configuration strategy is modified according to following processes：
If the terminal point of line unit and the installation site of internal lightning arrester are L1,…,Li,…,LN, i=1,2 ..., N, N represent arrester installation site sum, L in line unitiRepresent i-th of installation site；It is specifically divided into following two aspects：
If 1) LiClose to L1, then in L1And close to line unit head end and and L1Distance increases for d opening position according to each Add the principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of transmission line of electricity, the duration of power swing overvoltage and arrester is simultaneously full Sufficient power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy；
If 2) LiClose to LN, then close to half-wave power transmission line end and and LNDistance increases for d opening position according to each Add the principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of transmission line of electricity, the duration of power swing overvoltage and arrester is simultaneously full Sufficient power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of half-wave power transmission line power fluctuation overvoltage Optimal control device, these equipment solve the optimal control of principle and half-wave power transmission line power the fluctuation overvoltage of problem Method is similar, and the optimal control device of half-wave power transmission line power fluctuation overvoltage provided in an embodiment of the present invention includes first Determining module, the second determining module and judge module, separately below the function of these modules be described in detail：
First determining module therein, for the auxiliary control strategy of half-wave power transmission circuit that determines to pre-set and The absorption maximum energy of arrester under even configuration strategy；
Second determining module therein, for being inhaled according to the maximum of arrester under auxiliary control strategy and uniform configuration strategy Receive energy and determine the differentiation configuration strategy of arrester along half-wave power transmission circuit, and determine to aid in control strategy and differentiation The power swing overvoltage of half-wavelength transmission line of electricity, the duration of power swing overvoltage and arrester be most under configuration strategy It is big to absorb energy；
Judge module therein, for judging half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy Whether the absorption maximum energy of power swing overvoltage, the duration of power swing overvoltage and arrester meets power simultaneously Fluctuation limitation is required, differentiation configuration strategy is optimized if meet simultaneously, otherwise differentiation configuration strategy repaiied Just；
The power swing overvoltage of half-wave power transmission circuit includes producing in the case of breaking down on half-wave power transmission circuit Power swing when exceeding natural power, the overvoltage occurred on half-wave power transmission circuit；
The amplitude of the power swing overvoltage is proportional to the ratio of power swing and half-wave power transmission circuit natural power；
The duration of power swing overvoltage and the power swing time consistency of half-wave power transmission circuit；
If failure is single-phase transient earthing failure, the failure process of single-phase transient earthing failure include process during failure, Single-phase earthing transient fault sequential and process such as Fig. 2 occur for reclosing process and rocking process, specific half-wave power transmission circuit It is shown, the t in Fig. 20Singlephase earth fault moment, t occurs for half-wave power transmission circuitB1For the failure phase circuit breaker trip moment； tB2For failure phase breaker Reclosing Instant.
On the one hand, the auxiliary control strategy that above-mentioned first determining module determines is as follows：
Half-wave power transmission circuit is in the t shown in Fig. 20Singlephase earth fault failure occurs for the moment, by very first time interval TC1(TC1＜ tB2-tB1), cut off sending end transmitted power；After singlephase earth fault fault clearance, then by the second time interval TC2, sending end transmitted power is put into again, it is necessary to which explanation is that the sending end transmitted power put into again and the sending end cut off before are defeated Electrical power is identical.
On the other hand, the uniform configuration strategy that the first above-mentioned determining module determines is as follows：
Half-wave power transmission circuit is evenly dividing for multiple line units, and at the end of each line unit with regular length The arrester of point identical group of number of installing.
Another further aspect, the first above-mentioned determining module determine auxiliary control strategy and uniform configuration strategy according to procedure below The absorption maximum energy of lower arrester：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy.
On the one hand, the second above-mentioned determining module is according to the maximum for aiding in arrester under control strategy and uniform configuration strategy Energy is absorbed, and the differentiation configuration strategy of arrester along half-wave power transmission circuit is determined according to procedure below：
The 80% of arrester absorption energy capability is no more than with the absorption maximum energy of single group arrester, each taken shelter from the thunder It is principle that device installation site, which at most installs two groups of arresters and preferentially installs arrester in circuit cell end, in each circuit The terminal point of unit and internal zinc oxide surge arresters.
On the other hand, the second above-mentioned determining module is installed according to procedure below in the terminal point of line unit and inside Arrester：
1) terminal point of line unit and the installation number of internal lightning arrester are determined, including：
If the terminal point of line unit and internal installation m group arresters altogether, the maximum of arrester in uniform configuration strategy Absorption energy is EU, work as EU＜ 0.8EMWhen, m=1；Work as EU≥0.8EMWhen, m=[EU/0.8EM], [] represents round, Wherein, EMEnergy capability is absorbed for arrester；
2) terminal point of line unit and the installation site of internal lightning arrester are determined, including：
During m=1, one group of arrester is installed in circuit cell end end points；
During m=2, two groups of arresters are installed in circuit cell end end points；
During m >=3, line unit terminal point installs two groups of arresters, and remaining Allocation of Lightning Arrester exists in such a way Inside line unit：
Remaining Allocation of Lightning Arrester be d, 2d with line unit terminal point distance ..., kd opening position, wherein, k is Natural number, d represents the span of half-wave power transmission circuit, when m is even number,When m is odd number,
Another further aspect, the second determining module determine auxiliary control strategy and differentiation configuration strategy lower half according to procedure below The absorption maximum energy of the power swing overvoltage of wavelength transmission line of electricity, the duration of power swing overvoltage and arrester：
Under the conditions of half-wave power transmission circuit total transfer capability, pass through the electromagnetic transient simulation mould of half-wave power transmission system Type determines power swing overvoltage, the power swing mistake of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy The duration of voltage and the absorption maximum energy of arrester.
On the one hand, above-mentioned judge module determines following power fluctuation limit requirement：
1) the not super 1.4p.u. of the power swing overvoltage of substation line side, and the power swing mistake of substation line side The duration of voltage is not more than 0.5s；
2) the power swing Overvoltage Amplitude of half-wave power transmission circuit and the power swing of half-wave power transmission circuit are excessively electric The duration of pressure is satisfied by arrester temporary overvoltage tolerance performance；
3) the absorption maximum energy of arrester meets that arrester absorbs energy capability along half-wave power transmission circuit.
On the other hand, aid in the power swing of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy excessively electric The absorption maximum energy of pressure, the duration of power swing overvoltage and arrester meets that power fluctuation limit requires situation simultaneously Under, the 3rd determining module optimizes according to procedure below to differentiation configuration strategy：
If arrester installation site is L on half-wave power transmission circuit1,…,Lh,…,LH, single group arrester absorption maximum energy Measure as Eh, h=1,2 ..., H, H represent half-wave power transmission circuit on arrester installation site sum；It is divided into following two feelings Condition：
If 1) Eh＜ 0.5EMAnd line unit terminal point and internal shared at least two groups of arresters, according to from line unit The principle that head end reduces by one group of arrester to line unit end every time updates differentiation configuration strategy, and according to half-wave power transmission The electromagnetic transient simulation model of system, half-wave power transmission under the differentiation configuration strategy after renewal is determined with reference to auxiliary control strategy The absorption maximum energy of the power swing overvoltage of circuit, the duration of power swing overvoltage and arrester, and judge more The power swing overvoltage of half-wavelength transmission line of electricity, the duration of power swing overvoltage under differentiation configuration strategy after new Whether meet power fluctuation limit requirement simultaneously with the absorption maximum energy of arrester, if so, the differentiation after renewal is matched somebody with somebody Strategy is put as final Allocation of Lightning Arrester strategy, otherwise matches somebody with somebody the differentiation configuration strategy not updated as final arrester Put strategy；
If 2) 0.5EM≤Eh≤EMAnd aid in the power of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of fluctuation overvoltage, the duration of power swing overvoltage and arrester meets power fluctuation limit simultaneously It is required that then using differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
Another further aspect, aid in the power swing of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy excessively electric The absorption maximum energy of pressure, the duration of power swing overvoltage and arrester can not meet power fluctuation limit requirement simultaneously In the case of, the 3rd determining module is modified according to procedure below to differentiation configuration strategy：
If the terminal point of line unit and the installation site of internal lightning arrester are L1,…,Li,…,LN, i=1,2 ..., N, N represent arrester installation site sum, L in line unitiRepresent i-th of installation site；It is divided into following two situations：
If 1) LiClose to L1, then in L1And close to line unit head end and and L1Distance increases for d opening position according to each Add the principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of transmission line of electricity, the duration of power swing overvoltage and arrester is simultaneously full Sufficient power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy；
If 2) LiClose to LN, then close to half-wave power transmission line end and and LNDistance increases for d opening position according to each Add the principle amendment differentiation configuration strategy of one group of arrester, until half-wavelength under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of transmission line of electricity, the duration of power swing overvoltage and arrester is simultaneously full Sufficient power fluctuation limit requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
Embodiment 2
The embodiment of the present invention 2 is by taking single time extra-high voltage half-wave power transmission system as an example, to half-wavelength transmission line of alternation current power Fluctuate illustrating for the optimal control method of overvoltage：
Certain point is to net extra-high voltage half-wave power transmission system wiring schematic diagram as shown in figure 3, its sending end uses 10 600MW machines Group boosts to 1000kV, accesses receiving-end system by the 3000km circuits of single time erection, receiving end is directly accessed 1000kV power networks.By End uses one machine infinity bus system, and its capacity of short circuit is 40kA before the access of half-wave power transmission circuit.Its maximum delivery power is pressed 5000MW is designed.The approximate order parameter of 1000kV single back lines is as shown in table 1：
Table 1
Ignore line loss, extra high voltage line wave impedance Z can obtain according to table 1cNatural work(under=245.8 Ω, 1050kV Rate is 4485MW (1p.u.), wavelength 5898km, the accurate a length of 2949km of half-wave.Half-wave power transmission circuit length is set in research Spend for 3000km, totally 30 sections, every section of 100km.Arrester rated voltage is 876kV along extra-high voltage half-wave power transmission system, its Absorb energy capability EMFor 42MJ.
The control method detailed process for the half-wave power transmission system power fluctuation overvoltage that the embodiment of the present invention 2 provides is such as Under：
Step 1：It is determined that taken shelter from the thunder under the auxiliary control strategy of the half-wave power transmission circuit pre-set and uniform configuration strategy The absorption maximum energy of device：
Step 1-1：When extra-high voltage half-wave power transmission circuit is in the case of occurring single-phase transient fault, half-wave power transmission circuit On the power swing of amplitude be present, as shown in Figure 4.When power swing exceedes natural power, along half-wave power transmission circuit There is overvoltage, overvoltage extreme point is located at circuit stage casing along the line, as shown in Figure 5.The overvoltage of extreme point position such as Fig. 6 institutes Show, its amplitude (perunit value) is proportional to the ratio of power swing and natural power, overvoltage duration and power swing when Between it is consistent.The overvoltage is the power swing overvoltage that the present invention defines.Power swing overvoltage is characterised by temporarily excessively electric Category is pressed, amplitude is high, duration length, and area coverage is wide along the line.
Step 1-2：Over-voltage studies failure work is fluctuated using single-phase transient earthing failure as half-wave power transmission line power Condition, and the system rocking process during single-phase transient earthing process is divided into failure process, reclosing and after reclosing success Three phases altogether.Singlephase earth fault moment t occurs for half-wave power transmission circuit0For 4s, the failure phase circuit breaker trip moment is tB1 For 4.125s；Failure phase breaker Reclosing Instant tB2For 5.025s.
Step 1-3：Determine the auxiliary control strategy of half-wave power transmission circuit：Determine extra-high voltage half-wave power transmission system in list In the case of phase transient earthing failure, the resectable maximum delivery power S of extra-high voltage half-wave power transmission system sending end power supply singleCFor 600MW, i.e. a unit rated power.In the case of single-phase transient earthing failure occurs for half-wave power transmission circuit, after a failure TC(TC=200ms), i.e., cut off 1 600MW unit T in 4.2s moment, half-wave power transmission circuit sending end electromechanical sourceC＜ tB2- tB1=900ms.At the 6.5s moment, half-wave power transmission circuit sending end electromechanical source puts into 600MW unit again.
Step 1-4：Extra-high voltage half-wave power transmission circuit is evenly dividing as 30 line units with regular length 100km, And install 2 groups of arresters in the end points of each line unit.
Step 1-5：The absorption maximum of arrester under the auxiliary control strategy of half-wave power transmission circuit and uniform configuration strategy Energy determines according to procedure below：Under the conditions of extra-high voltage half-wave power transmission circuit total transfer capability 5000MW, pass through half-wave The electromagnetic transient simulation model of long transmission system determined under the auxiliary control strategy and uniform configuration strategy of half-wave power transmission circuit, The absorption maximum energy of arrester in single-phase transient earthing failure process, as shown in Figure 7.
Step 2：Inhaled according to the maximum of arrester under the auxiliary control strategy of half-wave power transmission circuit and uniform configuration strategy Receive energy and determine the differentiation configuration strategy of arrester along half-wave power transmission circuit, and determine to aid in control strategy and differentiation The power swing overvoltage of half-wave power transmission circuit, the duration of power swing overvoltage and arrester be most in configuration strategy It is big to absorb energy：
Step 2-1：According to the maximum of arrester under the auxiliary control strategy of half-wave power transmission circuit and uniform configuration strategy Absorb energy and determine that the differentiation configuration strategy of arrester along extra-high voltage half-wave power transmission circuit includes：With single group arrester Absorption maximum energy is no more than 80% and each arrester installation site at most installing two that arrester absorbs energy capability Group arrester is principle, and arrester is installed inside the end points and line unit of each line unit.Line unit is according to following Process determines the installation number of arrester：
If the terminal point of line unit and internal installation m group arresters altogether, arrester is descended most in uniform configuration strategy The big energy that absorbs is EU, work as EU＜ 0.8EMWhen, m=1；Work as EU≥0.8EMWhen, m=[EU/0.8EM], [] represents to round up to take It is whole, wherein, EMEnergy capability is absorbed for arrester.Thus each line unit along extra-high voltage half-wave power transmission circuit is obtained The quantity of configuration arrester, including line unit terminal point and inside are needed, as shown in figure 8, totally 62 groups of arresters.
Line unit determines the terminal point of line unit and the installation site of internal lightning arrester according to procedure below：
During m=1, one group of arrester is installed in circuit cell end end points；
During m=2, two groups of arresters are installed in circuit cell end end points；
During m >=3, line unit terminal point installs two groups of arresters, and remaining Allocation of Lightning Arrester exists in such a way Inside line unit：
Remaining Allocation of Lightning Arrester be 400m, 800m with line unit terminal point distance ..., k × 400m position Place, wherein, k is natural number, and the span of extra-high voltage half-wave power transmission circuit is 400m, when m is even number,M is odd number When,
With the 10th line unit (distance line head end 900km to 1000km line unit) and the 12nd line unit Exemplified by (distance line head end 1100km to 1200km line unit), the allocation position of multigroup arrester is illustrated：
According to Fig. 8, the 10th line unit needs to configure 4 groups of arresters altogether, then line unit terminal point installation 2 Group arrester, line-internal need to install 2 groups altogether.2 groups of Allocation of Lightning Arrester of line-internal are being with line unit terminal point distance 400m opening positions, as shown in Figure 9.
According to Fig. 9, the 12nd line unit needs to configure 3 groups of arresters altogether, then line unit terminal point installation 2 Group arrester, line-internal need to install 1 group altogether.1 group of Allocation of Lightning Arrester of line-internal is being with line unit terminal point distance 400m opening positions, as shown in Figure 10.
Step 2-2：Under the conditions of extra-high voltage half-wave power transmission circuit total transfer capability 5000MW, pass through half-wave power transmission The electromagnetic transient simulation model of system determines the power of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy Fluctuate the absorption maximum energy of overvoltage, power swing overvoltage duration and arrester：Power swing overvoltage is most along the line Amplitude is 1.59pu, and the 1.55~1.59pu overvoltage duration is 0.9s, as shown in figure 11；Along extra-high voltage half-wavelength Arrester (single group) absorption maximum Energy distribution is as shown in figure 12.
Step 3：Judge that the power swing of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy is excessively electric Whether the absorption maximum energy of pressure, power swing overvoltage duration and arrester meets power fluctuation limit requirement simultaneously, Differentiation configuration strategy is optimized if meet simultaneously, otherwise differentiation configuration strategy is modified：
Step 3-1：Determine that following half-wave power transmission system power fluctuation limitations require：
1) the not super 1.4p.u. of the power swing overvoltage in ultra-high voltage transformer station line side, and the power of substation line side The duration of fluctuation overvoltage is not more than 0.5s；
2) power waves of the power swing Overvoltage Amplitude of extra-high voltage half-wave power transmission circuit and half-wave power transmission circuit The duration of dynamic overvoltage is satisfied by arrester temporary overvoltage tolerance performance, specific as shown in table 2：
Table 2
3) the absorption maximum energy of arrester meets that arrester absorbs energy capability along half-wave power transmission circuit.
Step 3-2：Differentiation configuration strategy is optimized：
If arrester installation site is L on extra-high voltage half-wave power transmission circuit1,…,Lh,…,LH, LhSingle group arrester is most The big energy that absorbs is Eh, h=1,2 ..., H, H represent half-wave power transmission circuit on arrester installation site sum.
21MJ (0.5EM) is less than according to the arrester absorption maximum energy of the line units of Figure 12, the 3rd and 13, and end and The shared at least two groups of arresters in inside；The absorption maximum energy of All other routes unit arrester meets 0.5EM≤Eh≤EM, and work( Rate fluctuation overvoltage, power swing overvoltage duration meet power fluctuation limit requirement.Therefore according to first from line unit Hold the lightning-arrest of the 3rd and 13 line units in the principle renewal differentiation configuration strategy for reducing by one group of arrester to line unit end The configuration quantity of device.And the differentiation configuration strategy after renewal is determined according to the electromagnetic transient simulation model of half-wave power transmission system The absorption maximum energy of the power swing overvoltage of lower half-wavelength transmission line of electricity, power swing overvoltage duration and arrester Amount：Power swing overvoltage maximum amplitude is 1.59pu along the line, and the 1.55~1.59pu overvoltage duration is 0.9s, is such as schemed Shown in 13；Arrester (single group) absorption maximum Energy distribution is as shown in figure 14 along extra-high voltage half-wavelength.The above results can expire Sufficient power fluctuation limit requirement, therefore using the differentiation configuration strategy after renewal as final Allocation of Lightning Arrester strategy.It is extra-high Pressure half-wave power transmission circuit need to configure 60 groups of arresters altogether.
For convenience of description, each several part of apparatus described above is divided into various modules with function or unit describes respectively. Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program Product.Therefore, the application can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware Apply the form of example.Moreover, the application can use the computer for wherein including computer usable program code in one or more The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of product.
The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute The those of ordinary skill in category field with reference to above-described embodiment still can to the present invention embodiment modify or Equivalent substitution, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent substitution Within bright claims.

Claims (20)

  1. A kind of 1. optimal control method of half-wave power transmission line power fluctuation overvoltage, it is characterised in that including：
    It is determined that the maximum of arrester is inhaled under the auxiliary control strategy of the half-wave power transmission circuit pre-set and uniform configuration strategy Receive energy；
    Half-wave power transmission circuit edge is determined according to the absorption maximum energy of arrester under auxiliary control strategy and uniform configuration strategy The differentiation configuration strategy of line arrester, and determine to aid in half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of power swing overvoltage, the duration of power swing overvoltage and arrester；
    Judge the power swing overvoltage of half-wavelength transmission line of electricity, power swing under auxiliary control strategy and differentiation configuration strategy Whether the duration of overvoltage and the absorption maximum energy of arrester meet power fluctuation limit requirement simultaneously, if meet simultaneously Then differentiation configuration strategy is optimized, otherwise differentiation configuration strategy is modified；
    The auxiliary control strategy includes：
    After singlephase earth fault failure occurs for the half-wave power transmission circuit, by very first time interval, excision sending end transmission of electricity work( Rate；And sending end transmitted power is put into again by the second time interval after singlephase earth fault fault clearance.
  2. 2. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 1, its feature exist In the power swing overvoltage of the half-wave power transmission circuit is included caused by the case of being broken down on half-wave power transmission circuit When power swing exceedes natural power, the overvoltage that occurs on half-wave power transmission circuit；
    The amplitude of the power swing overvoltage is proportional to the ratio of power swing and half-wave power transmission circuit natural power；
    The duration of the power swing overvoltage and the power swing time consistency of half-wave power transmission circuit；
    If failure is single-phase transient earthing failure, the failure process of the single-phase transient earthing failure include process during failure, Reclosing process and rocking process.
  3. 3. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 1 or 2, its feature It is, the uniformly configuration strategy determines according to procedure below：
    Half-wave power transmission circuit is evenly dividing as multiple line units with regular length, and filled in the end points of each line unit If the arrester of identical group of number.
  4. 4. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 1 or 2, its feature It is, the absorption maximum energy of arrester determines according to procedure below under the auxiliary control strategy and uniform configuration strategy：
    It is true by the electromagnetic transient simulation model of half-wave power transmission system under the conditions of half-wave power transmission circuit total transfer capability Surely the absorption maximum energy of arrester under control strategy and uniform configuration strategy is aided in.
  5. 5. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 1 or 2, its feature It is, the absorption maximum energy according to arrester under auxiliary control strategy and uniform configuration strategy determines half-wave power transmission line The differentiation configuration strategy of curb line arrester includes：
    Arrester is no more than with the absorption maximum energy of single group arrester and absorbs the 80% of energy capability, each arrester peace It is principle that holding position, which at most installs two groups of arresters and preferentially installs arrester in circuit cell end, in each line unit Terminal point and internal zinc oxide surge arresters.
  6. 6. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 5, its feature exist In the terminal point of the line unit and internal zinc oxide surge arresters include：
    The terminal point of line unit and the installation number of internal lightning arrester are determined, including：
    If the terminal point of line unit and internal installation m group arresters altogether, the absorption maximum of arrester in uniform configuration strategy Energy is EU, work as EU＜ 0.8EMWhen, m=1；Work as EU≥0.8EMWhen, m=[EU/0.8EM], [] represents round, its In, EMEnergy capability is absorbed for arrester；
    The terminal point of line unit and the installation site of internal lightning arrester are determined, including：
    During m=1, one group of arrester is installed in circuit cell end end points；
    During m=2, two groups of arresters are installed in circuit cell end end points；
    During m >=3, line unit terminal point installs two groups of arresters, and remaining Allocation of Lightning Arrester is in such a way in circuit Inside unit：
    Remaining Allocation of Lightning Arrester be d, 2d with line unit terminal point distance ..., kd opening position, wherein, k is nature Number, d represents the span of half-wave power transmission circuit, when m is even number,When m is odd number,
  7. 7. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 1 or 2, its feature It is, it is described to determine the power swing overvoltage of half-wavelength transmission line of electricity, work(under auxiliary control strategy and differentiation configuration strategy The duration of rate fluctuation overvoltage and the absorption maximum energy of arrester include：
    It is true by the electromagnetic transient simulation model of half-wave power transmission system under the conditions of half-wave power transmission circuit total transfer capability Surely power swing overvoltage, the power swing overvoltage of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy are aided in Duration and arrester absorption maximum energy.
  8. 8. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 1, its feature exist In the power fluctuation limit requires to include：
    1) the not super 1.4p.u. of the power swing overvoltage of substation line side, and the power swing overvoltage of substation line side Duration be not more than 0.5s；
    2) the power swing overvoltage of the power swing Overvoltage Amplitude of half-wave power transmission circuit and half-wave power transmission circuit Duration is satisfied by arrester temporary overvoltage tolerance performance；
    3) the absorption maximum energy of arrester meets that arrester absorbs energy capability along half-wave power transmission circuit.
  9. 9. the optimal control method of the half-wave power transmission line power fluctuation overvoltage according to claim 1,2 or 8, it is special Sign is, it is described differentiation configuration strategy is optimized including：
    If arrester installation site is L on half-wave power transmission circuit1,…,Lh,…,LH, single group arrester absorption maximum energy is Eh, h=1,2 ..., H, H represent half-wave power transmission circuit on arrester installation site sum；
    If Eh＜ 0.5EMAnd line unit terminal point and internal shared at least two groups of arresters, according to from line unit head end to The principle renewal differentiation configuration strategy of one group of arrester is reduced in line unit end every time, and according to half-wave power transmission system Electromagnetic transient simulation model, half-wavelength transmission line of electricity under the differentiation configuration strategy after renewal is determined with reference to auxiliary control strategy The absorption maximum energy of power swing overvoltage, the duration of power swing overvoltage and arrester, and judge after updating The power swing overvoltage of half-wavelength transmission line of electricity under differentiation configuration strategy, duration of power swing overvoltage and lightning-arrest Whether the absorption maximum energy of device meets power fluctuation limit requirement simultaneously, if so, by the differentiation configuration strategy after renewal As final Allocation of Lightning Arrester strategy, otherwise using the differentiation configuration strategy not updated as final Allocation of Lightning Arrester plan Slightly；
    If 0.5EM≤Eh≤EMAnd aid in the power swing mistake of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of voltage, the duration of power swing overvoltage and arrester meets power fluctuation limit requirement simultaneously, Then using differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
  10. 10. the optimal control method of the half-wave power transmission line power fluctuation overvoltage according to claim 1,2 or 8, its Be characterised by, it is described differentiation configuration strategy is modified including：
    If the terminal point of line unit and the installation site of internal lightning arrester are L1,…,Li,…,LN, i=1,2 ..., N, N tables Show arrester installation site sum, L in line unitiRepresent i-th of installation site；
    If LiClose to L1, then in L1And close to line unit head end and and L1Distance increases by one group for d opening position according to each The principle amendment differentiation configuration strategy of arrester, until half-wavelength power transmission line under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage on road, the duration of power swing overvoltage and arrester meets power simultaneously Fluctuation limitation requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy；
    If LiClose to LN, then close to half-wave power transmission line end and and LNDistance increases by one group for d opening position according to each The principle amendment differentiation configuration strategy of arrester, until half-wavelength power transmission line under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage on road, the duration of power swing overvoltage and arrester meets power simultaneously Fluctuation limitation requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
  11. A kind of 11. optimal control device of half-wave power transmission line power fluctuation overvoltage, it is characterised in that including：
    First determining module, the auxiliary control strategy of the half-wave power transmission circuit pre-set for determination and uniform configuration strategy The absorption maximum energy of lower arrester；
    Second determining module, determined for the absorption maximum energy according to arrester under auxiliary control strategy and uniform configuration strategy The differentiation configuration strategy of arrester along half-wave power transmission circuit, and determine to aid under control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage of half-wave power transmission circuit, the duration of power swing overvoltage and arrester Amount；
    Judge module, for judging the power swing mistake of half-wavelength transmission line of electricity under auxiliary control strategy and differentiation configuration strategy Whether the absorption maximum energy of voltage, the duration of power swing overvoltage and arrester meets that power fluctuation limit will simultaneously Ask, differentiation configuration strategy is optimized if meet simultaneously, otherwise differentiation configuration strategy is modified；
    The auxiliary control strategy includes：
    After singlephase earth fault failure occurs for the half-wave power transmission circuit, by very first time interval, excision sending end transmission of electricity work( Rate；And sending end transmitted power is put into again by the second time interval after singlephase earth fault fault clearance.
  12. 12. the optimal control device of half-wave power transmission line power fluctuation overvoltage according to claim 11, its feature It is, the power swing overvoltage of the half-wave power transmission circuit includes producing in the case of breaking down on half-wave power transmission circuit Power swing when exceeding natural power, the overvoltage occurred on half-wave power transmission circuit；
    The amplitude of the power swing overvoltage is proportional to the ratio of power swing and half-wave power transmission circuit natural power；
    The duration of the power swing overvoltage and the power swing time consistency of half-wave power transmission circuit；
    If failure is single-phase transient earthing failure, the failure process of the single-phase transient earthing failure include process during failure, Reclosing process and rocking process.
  13. 13. the optimal control device of the half-wave power transmission line power fluctuation overvoltage according to claim 11 or 12, its It is characterised by, first determining module determines uniform configuration strategy according to procedure below：
    Half-wave power transmission circuit is evenly dividing as multiple line units with regular length, and filled in the end points of each line unit If the arrester of identical group of number.
  14. 14. the optimal control device of the half-wave power transmission line power fluctuation overvoltage according to claim 11 or 12, its It is characterised by, first determining module determines arrester under auxiliary control strategy and uniform configuration strategy according to procedure below Absorption maximum energy：
    It is true by the electromagnetic transient simulation model of half-wave power transmission system under the conditions of half-wave power transmission circuit total transfer capability Surely the absorption maximum energy of arrester under control strategy and uniform configuration strategy is aided in.
  15. 15. the optimal control device of the half-wave power transmission line power fluctuation overvoltage according to claim 11 or 12, its It is characterised by, second determining module is according to the absorption maximum energy for aiding in arrester under control strategy and uniform configuration strategy Measure, and the differentiation configuration strategy of arrester along half-wave power transmission circuit is determined according to procedure below：
    Arrester is no more than with the absorption maximum energy of single group arrester and absorbs the 80% of energy capability, each arrester peace It is principle that holding position, which at most installs two groups of arresters and preferentially installs arrester in circuit cell end, in each line unit Terminal point and internal zinc oxide surge arresters.
  16. 16. the optimal control device of half-wave power transmission line power fluctuation overvoltage according to claim 15, its feature It is, second determining module is according to terminal point of the procedure below in line unit and internal zinc oxide surge arresters：
    The terminal point of line unit and the installation number of internal lightning arrester are determined, including：
    If the terminal point of line unit and internal installation m group arresters altogether, the absorption maximum of arrester in uniform configuration strategy Energy is EU, work as EU＜ 0.8EMWhen, m=1；Work as EU≥0.8EMWhen, m=[EU/0.8EM], [] represents round, its In, EMEnergy capability is absorbed for arrester；
    The terminal point of line unit and the installation site of internal lightning arrester are determined, including：
    During m=1, one group of arrester is installed in circuit cell end end points；
    During m=2, two groups of arresters are installed in circuit cell end end points；
    During m >=3, line unit terminal point installs two groups of arresters, and remaining Allocation of Lightning Arrester is in such a way in circuit Inside unit：
    Remaining Allocation of Lightning Arrester be d, 2d with line unit terminal point distance ..., kd opening position, wherein, k is nature Number, d represents the span of half-wave power transmission circuit, when m is even number,When m is odd number,
  17. 17. the optimal control device of the half-wave power transmission line power fluctuation overvoltage according to claim 11 or 12, its It is characterised by, second determining module determines half-wavelength under auxiliary control strategy and differentiation configuration strategy according to procedure below The absorption maximum energy of the power swing overvoltage of transmission line of electricity, the duration of power swing overvoltage and arrester：
    It is true by the electromagnetic transient simulation model of half-wave power transmission system under the conditions of half-wave power transmission circuit total transfer capability Surely power swing overvoltage, the power swing overvoltage of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy are aided in Duration and arrester absorption maximum energy.
  18. 18. the optimal control method of half-wave power transmission line power fluctuation overvoltage according to claim 11, its feature It is, the judge module is used to determine following power fluctuation limit requirement：
    1) the not super 1.4p.u. of the power swing overvoltage of substation line side, and the power swing overvoltage of substation line side Duration be not more than 0.5s；
    2) the power swing overvoltage of the power swing Overvoltage Amplitude of half-wave power transmission circuit and half-wave power transmission circuit Duration is satisfied by arrester temporary overvoltage tolerance performance；
    3) the absorption maximum energy of arrester meets that arrester absorbs energy capability along half-wave power transmission circuit.
  19. 19. the optimal control device of the half-wave power transmission line power fluctuation overvoltage according to claim 11,12 or 18, Characterized in that, the 3rd determining module optimizes according to procedure below to differentiation configuration strategy：
    If arrester installation site is L on half-wave power transmission circuit1,…,Lh,…,LH, single group arrester absorption maximum energy is Eh, h=1,2 ..., H, H represent half-wave power transmission circuit on arrester installation site sum；
    If Eh＜ 0.5EMAnd line unit terminal point and internal shared at least two groups of arresters, according to from line unit head end to The principle renewal differentiation configuration strategy of one group of arrester is reduced in line unit end every time, and according to half-wave power transmission system Electromagnetic transient simulation model, half-wavelength transmission line of electricity under the differentiation configuration strategy after renewal is determined with reference to auxiliary control strategy The absorption maximum energy of power swing overvoltage, the duration of power swing overvoltage and arrester, and judge after updating The power swing overvoltage of half-wavelength transmission line of electricity under differentiation configuration strategy, duration of power swing overvoltage and lightning-arrest Whether the absorption maximum energy of device meets power fluctuation limit requirement simultaneously, if so, by the differentiation configuration strategy after renewal As final Allocation of Lightning Arrester strategy, otherwise using the differentiation configuration strategy not updated as final Allocation of Lightning Arrester plan Slightly；
    If 0.5EM≤Eh≤EMAnd aid in the power swing mistake of half-wavelength transmission line of electricity under control strategy and differentiation configuration strategy The absorption maximum energy of voltage, the duration of power swing overvoltage and arrester meets power fluctuation limit requirement simultaneously, Then using differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
  20. 20. the optimal control device of the half-wave power transmission line power fluctuation overvoltage according to claim 11,12 or 18, Characterized in that, the 3rd determining module is modified according to procedure below to differentiation configuration strategy：
    If the terminal point of line unit and the installation site of internal lightning arrester are L1,…,Li,…,LN, i=1,2 ..., N, N tables Show arrester installation site sum, L in line unitiRepresent i-th of installation site；
    If LiClose to L1, then in L1And close to line unit head end and and L1Distance increases by one group for d opening position according to each The principle amendment differentiation configuration strategy of arrester, until half-wavelength power transmission line under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage on road, the duration of power swing overvoltage and arrester meets power simultaneously Fluctuation limitation requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy；
    If LiClose to LN, then close to half-wave power transmission line end and and LNDistance increases by one group for d opening position according to each The principle amendment differentiation configuration strategy of arrester, until half-wavelength power transmission line under auxiliary control strategy and differentiation configuration strategy The absorption maximum energy of the power swing overvoltage on road, the duration of power swing overvoltage and arrester meets power simultaneously Fluctuation limitation requirement, and using revised differentiation configuration strategy as final Allocation of Lightning Arrester strategy.
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CN106786675A (en) * 2017-02-14 2017-05-31 中国电力科学研究院 A kind of power system stabilizer, PSS and its implementation
CN106953327A (en) * 2017-03-24 2017-07-14 全球能源互联网研究院 Frequency conversion flexibility tuner, half-wavelength AC transmission system and its control method

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