CN107317349A - Coordination approach between machine-electricity transient model and station under extra-high voltage direct-current layer-specific access mode - Google Patents
Coordination approach between machine-electricity transient model and station under extra-high voltage direct-current layer-specific access mode Download PDFInfo
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- CN107317349A CN107317349A CN201710395845.9A CN201710395845A CN107317349A CN 107317349 A CN107317349 A CN 107317349A CN 201710395845 A CN201710395845 A CN 201710395845A CN 107317349 A CN107317349 A CN 107317349A
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- 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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
Coordination approach between machine-electricity transient model and station under a kind of extra-high voltage direct-current layer-specific access mode of present invention offer, the machine-electricity transient model, which includes the machine-electricity transient model, includes DC side circuit model；The transverter of DC transmission system is equivalent to the end that controlled voltage source seals in DC side network by DC side circuit model, including inverter side transverter, rectification side transverter and transmission line of electricity, for asking for the inverter side transverter and rectification side transverter DC current size；Inverter side transverter includes the first inverter side transverter and the second inverter side transverter；The voltage class of first inverter side transverter is more than the voltage class of the second inverter side transverter.The technical scheme that the present invention is provided, the simulation model of the MTDC transmission system of layer-specific access structure is established on the basis of, the framework of control model and control method is formulated, the domestic technological gap in layer-specific access formula multi-terminal direct current transmission system modeling and simulating field is solved, and technical support is provided for the research in later stage.
Description
Technical field
The present invention relates to electric system simulation modeling technique, and in particular to electromechanical temporary under extra-high voltage direct-current layer-specific access mode
Coordination approach between states model and station.
Background technology
At present, conventional two ends high voltage direct current transmission project is widely used, and Simulation Calculation tends to be ripe.It is straight with two ends
Stream transmission system is compared, and the modeling of multi-terminal direct current transmission system is relatively fewer, mainly uses electromechanical transient simulation soft now
Multi-terminal HVDC transmission model in part PSD-BPA.The major defect of the model is：
(1) model is parallel multi-terminal direct current transmission system model, rather than layer-specific access formula multi-terminal HVDC transmission system
System model, it is impossible to meet the demand of layer-specific access formula multi-terminal direct current transmission system emulation.
(2) coordination control strategy between the station of multiple current conversion stations is not accounted for.
Coordinate between the station of layer-specific access formula multi-terminal direct current transmission system, be the key of system safe and stable operation, be also to build
The core link of mould.Main coordination approach is current margins method in the prior art.The basic thought of this method is layer-specific access
The equal only one of which change of current stand control DC current of any method of operation of formula multi-terminal direct current transmission system, remaining change of current stand control direct current
Voltage, must provide current-order nargin.Current margins method is as the control method for coordinating of two ends direct current, it is necessary to according to different many
End straight flow structure is expanded.
To overcome the shortcoming of existing multi-terminal direct current transmission system model, layer-specific access formula MTDC transmission system emulation energy is made up
The deficiency of power, in view of the shortcomings of the prior art, the present invention propose a kind of direct current machine-electricity transient model, and accordingly propose to coordinate between station
Method, to realize the transient stability emulation for the alternating current-direct current power network containing layer-specific access formula multi-terminal HVDC transmission.
The content of the invention
In order to solve the above-mentioned deficiency in the presence of prior art, the present invention provides machine under a kind of direct current layer-specific access mode
Coordination approach between electric transient Model and station.
The technical scheme that the present invention is provided is：The machine-electricity transient model includes DC side circuit model；
The DC side circuit model, is equivalent to controlled voltage source by the transverter of DC transmission system and seals in DC side net
The end of network；
The DC side circuit model includes：Inverter side transverter, rectification side transverter and transmission line of electricity, for asking for
State inverter side transverter and rectification side transverter DC current size；
The inverter side transverter includes the first inverter side transverter and the second inverter side transverter；
The voltage class of the first inverter side transverter is more than the voltage class of the second inverter side transverter.
It is preferred that, the machine-electricity transient model of the rectification side transverter is shown below：
Udr=Udr0cosα-dxrIdr (1)
In formula, UdrFor the DC voltage of rectification side transverter；Udr0For rectification side ideal no-load direct voltage；α is rectification
Side transverter Trigger Angle；dxrFor rectification side commutating reactance；IdrFor rectification side DC current；
The Udr0It is calculated as follows：
Udr0=1.35Er (2)
In formula, ErFor rectification side converter transformer valve survey line voltage effective value.
It is preferred that, the machine-electricity transient model of the inverter side transverter is shown below：
Udi=Udi0cosγ-dxiIdi (3)
In formula, UdiFor the DC voltage of inverter side transverter；Udi0For inverter side ideal no-load direct voltage；γ is inverse
Become side transverter blow-out angle；dxiFor inverter side commutating reactance；IdiFor inverter side DC current；
The Udi0It is calculated as follows：
Udi0=1.35Ei (4)
In formula, EiFor inverter side converter transformer valve survey line voltage effective value.
It is preferred that, the model of power transmission system is shown below：
In formula, Udm：Voltage at DC node m；Uc：The voltage at electric capacity two ends；Rl：The resistance of transmission line of electricity；Idm：Direct current
Electric current at node m；Ll：The inductance of transmission line of electricity；Udn：Voltage at DC node n；Idn：Electric current at DC node n；C：
Electric capacity.
It is preferred that, the rectification side transverter of the DC side circuit model and the DC voltage of inverter side transverter are as the following formula
Calculate：
In formula, Udr：The DC voltage of rectification side transverter；dxr：The phase change voltage drop resistance of rectification side transverter；Udi0r：
Rectification side change of current busbar voltage；α：Rectification side transverter Trigger Angle；Rd：The resistance of DC side transmission line of electricity；Ld：DC side is transmitted electricity
The inductance of circuit；Uc：The voltage at electric capacity two ends；Lsr：The flat ripple reactance of rectification side transverter；Idr：The direct current of rectification side transverter
Side electric current；Udi1：The voltage of first inverter side transverter；Udi0i1：The change of current busbar voltage of first inverter side transverter；γ1：The
The blow-out angle of one inverter side transverter；dxi1：The phase change voltage drop resistance of first inverter side transverter；Idi1：The first inverter side change of current
The change of current bus current of device；Udi2：The voltage of second inverter side transverter；Udi0i2：The change of current bus electricity of second inverter side transverter
Pressure；γ2：The blow-out angle of second inverter side transverter；dxi2：The phase change voltage drop resistance of second inverter side transverter；Idi2：Second is inverse
Become the change of current bus current of side transverter；Lsi1And Lsi2：The respectively flat ripple reactance of first layer and the second inverter side transverter.
It is preferred that, the Idr、Idi1、Idi2And UcCalculated and obtained by following formula respectively：
In formula, Idr：Rectification side DC current；Idi1：The change of current bus current of first inverter side transverter；Idi2：Second is inverse
Become the change of current bus current of side transverter；Ic：Flow through the electric current of electric capacity；C：Electric capacity；Uc：The voltage at electric capacity two ends；Ic：Flow through electricity
The electric current of appearance；Idr：Rectification side DC current；Udi0r：Rectification side change of current busbar voltage；α：Rectification side transverter Trigger Angle；Rd：Directly
Flow side resistance；Ld：DC side inductance；Lsr：The flat ripple reactance of rectification side transverter；Lsi1And Lsi2：Respectively first and second
The flat ripple reactance of inverter side transverter；γ1：The blow-out angle of first inverter side transverter；γ2：The blow-out of second inverter side transverter
Angle.
A kind of electromechanical transient state modeling method of direct current, methods described includes：Build inverter side transverter model, the rectification side change of current
Device model and model of power transmission system；
The model of power transmission system is used to connect the inverter side transverter model and rectification side transverter model；
The inverter side transverter model includes the first inverter side transverter and the second inverter side transverter；
The voltage class of the first inverter side transverter is more than the voltage class of the second inverter side transverter.
Coordination approach includes between coordination approach between a kind of direct current machine-electricity transient model station, the station：
Using converting plant, current-order control electric current is set；
Coordinate the voltage of the first Inverter Station of control and the second Inverter Station, make the electricity of first Inverter Station and the second Inverter Station
Pressure is within the specific limits；
The voltage class of first Inverter Station is more than the voltage class of the second Inverter Station.
It is preferred that, first Inverter Station of control and the method for the second Inverter Station coordinated includes：Voltage control method and put out
Arc angle control method.
It is preferred that, the voltage control method includes：Issue voltage instruction, current-order, the current margins of negative sense；
The gamma kick method includes：Issue voltage instruction, positive voltage margin, current-order, the electricity of negative sense
Flow nargin；
It is preferred that, first Inverter Station of control and the voltage of the second Inverter Station coordinated includes：First Inverter Station and
Second Inverter Station uses voltage control method；
The voltage for the voltage instruction that the voltage control method is issued to first Inverter Station and the second Inverter Station and straight
The voltage sum for flowing transmission line of electricity is specified threshold.
It is preferred that, first Inverter Station of control and the voltage of the second Inverter Station coordinated includes：First Inverter Station and
Second Inverter Station uses gamma kick method；
The voltage for the voltage instruction that the gamma kick method is issued to first Inverter Station and the second Inverter Station it
With for specified threshold.
It is preferred that, first Inverter Station of control and the voltage of the second Inverter Station coordinated includes, first Inverter Station and
Voltage control method and gamma kick method is respectively adopted in second Inverter Station；
The voltage for the voltage instruction that the voltage instruction and gamma kick method that the voltage control method is issued are issued it
With for voltage threshold.
Coordinate system between a kind of direct current machine-electricity transient model station, the system includes current control module and voltage control mould
Block；
The current control module includes：Current-order is issued to converting plant, the electric current for controlling machine-electricity transient model；
The voltage control module includes：By coordination approach to sending instructions under the first Inverter Station and the second Inverter Station, use
In the voltage of control machine-electricity transient model.
Compared with prior art, beneficial effects of the present invention are：
(1) coordination side between the machine-electricity transient model for the layer-specific access formula multi-terminal direct current transmission system that the present invention is provided and station
Method, the simulation model of the MTDC transmission system of layer-specific access structure is established on the basis of, control model and controlling party has been formulated
The framework of method, solves the domestic technological gap in layer-specific access formula multi-terminal direct current transmission system modeling and simulating field substantially.
(2) coordination side between the machine-electricity transient model for the layer-specific access formula multi-terminal direct current transmission system that the present invention is provided and station
Method, is the engineering design of layer-specific access formula multi-terminal direct current transmission system, and contains layer-specific access formula multi-terminal direct current transmission system
The work such as scheduling, operation, the planning of alternating current-direct current bulk power grid simulation means and technical support are provided.
Brief description of the drawings
Fig. 1 is extra-high voltage direct-current layer-specific access mode topological structure schematic diagram of the invention；
Fig. 2 is the T-shaped equivalent circuit diagram of DC power transmission line of the invention；
Fig. 3 is direct current layer-specific access system dc side system equivalent-circuit model figure of the invention；
Fig. 4 is full gamma kick characteristic schematic diagram of the invention；
Fig. 5 is blow-out angle of the invention, voltage mixing control characteristic schematic diagram；
Fig. 6 is full voltage control characteristic schematic diagram of the invention；
Wherein, 1- AC systems 1,2- rectifications, 3- DC lines, high-end 12 pulsation of 4- inversions, 5- inversions bottom 12 is pulsed,
6- AC system 2,7- AC systems 3.
Embodiment
For a better understanding of the present invention, present disclosure is done further with reference to Figure of description and example
Explanation.
As shown in figure 1, the present invention, which provides a kind of direct current machine-electricity transient model, includes DC side circuit model, for asking for
State inverter side transverter and rectification side transverter DC current size；
Inverter side transverter includes the first inverter side transverter and the second inverter side transverter, and the first inverter side transverter
Voltage class be more than the second inverter side transverter voltage class；
The DC side circuit model includes inverter side transverter, rectification side transverter and transmission line of electricity.
As shown in figure 3, DC side circuit model, the part is the core of layer-specific access formula multi-terminal direct current transmission system model
The heart, DC side circuit model includes inverter side, rectification side and the DC power transmission line being sequentially connected in series；Transverter is equivalent to controlled
Voltage source is incorporated to the end of DC side network, and the controlled quentity controlled variable of the controlled source is Trigger Angle, alternating voltage amplitude, the direct current of transverter
Electric current.The target of DC side circuit model is to ask for the DC current size at each end, and needs to handle the special operation of direct current
State, such as commutation failure, zero current condition etc..
The machine-electricity transient model of rectification side transverter is shown below：
Udr=Udr0cosα-dxrIdr (1)
In formula, UdrFor the DC voltage of rectification side transverter；Udr0For rectification side ideal no-load direct voltage；α is rectification
Side transverter Trigger Angle；dxrFor rectification side commutating reactance；IdrFor rectification side DC current；
The Udr0It is calculated as follows：
Udr0=1.35Er (2)
In formula, ErFor rectification side converter transformer valve survey line voltage effective value.
The machine-electricity transient model of inverter side transverter is shown below：
Udi=Udi0cosγ-dxiIdi (3)
In formula, UdiFor the DC voltage of inverter side transverter；Udi0For inverter side ideal no-load direct voltage；γ is inverse
Become side transverter blow-out angle；dxiFor inverter side commutating reactance；IdiFor inverter side DC current；
Wherein, Udi0It is calculated as follows：
Udi0=1.35Ei (4)
In formula, EiFor inverter side converter transformer valve survey line voltage effective value.
Model of power transmission system is shown below：
In formula, Udm：Voltage at DC node m；Uc：The voltage at electric capacity two ends；Rl：The resistance of transmission line of electricity；Idm：Direct current
Electric current at node m；Ll：The inductance of transmission line of electricity；Udn：Voltage at DC node n；Idn：Electric current at DC node n；C：
Electric capacity.
Row are write differential equation group and are shown below：
In formula, Idr：Rectification side DC current；Idi1：The change of current bus current of first inverter side transverter；Idi2：Second is inverse
Become the change of current bus current of side transverter；Ic：Flow through the electric current of electric capacity；C：Electric capacity；Uc：The voltage at electric capacity two ends；Ic：Flow through electricity
The electric current of appearance；Idr：Rectification side DC current；Udi0r：Rectification side change of current busbar voltage；α：Rectification side transverter Trigger Angle；Rd：Directly
Flow side resistance；Ld：DC side inductance；Lsr：The flat ripple reactance of rectification side transverter；Lsi1And Lsi2：Respectively first and second
The flat ripple reactance of inverter side transverter；γ1：The blow-out angle of first inverter side transverter；γ2：The blow-out of second inverter side transverter
Angle；
Solve line current：
Solve capacitance voltage：
After iteration convergence, the DC voltage that can calculate each transverter is as follows：
The rectification side transverter of DC side circuit model and the DC voltage of inverter side transverter are calculated as follows：
In formula, Udr：The DC voltage of rectification side transverter；dxr：The phase change voltage drop resistance of rectification side transverter；Udi0r：
Rectification side change of current busbar voltage；α：Rectification side transverter Trigger Angle；Ld：The inductance of DC side transmission line of electricity；Rd：DC side is transmitted electricity
The resistance of circuit；Uc：The voltage at electric capacity two ends；Lsr：The flat ripple reactance of rectification side transverter；Idr：The direct current of rectification side transverter
Side electric current；Udi1：The voltage of first inverter side transverter；Udi0i1：The change of current busbar voltage of first inverter side transverter；γ1：The
The blow-out angle of one inverter side transverter；dxi1：The phase change voltage drop resistance of first inverter side transverter；Idi1：The first inverter side change of current
The change of current bus current of device；Udi2：The voltage of second inverter side transverter；Udi0i2：The change of current bus electricity of second inverter side transverter
Pressure；γ2：The blow-out angle of second inverter side transverter；dxi2：The phase change voltage drop resistance of second inverter side transverter；Idi2：Second is inverse
Become the change of current bus current of side transverter；Lsi1And Lsi2：The flat ripple reactance of respectively the first and second inverter side transverters.
Coordination approach between a kind of direct current machine-electricity transient model station, for layer-specific access formula multi-terminal direct current transmission system, rectification
Stand as current control station, Inverter Station then control voltage.For the different control strategies of two Inverter Stations, propose to assist between three kinds of stations
Control method：
Control method for coordinating includes gamma kick method and voltage control method between standing, for the first inversion of the application
Stand and the control of the second Inverter Station includes：First Inverter Station and the second Inverter Station use gamma kick entirely, or use voltage entirely
Control, then or one use gamma kick, another using voltage control.
1. full gamma kick
As shown in figure 4, under full gamma kick mode, the respective blow-out angle of control of two Inverter Station independences.Coordination side
Method is：Two Inverter Stations give voltage instruction Udref- γ 1, Udref- γ 2, positive voltage margin Δ U, current-order respectively
Io, the current margins Δ I of negative sense1, Δ I2.Voltage instruction must be met：
Udref-γ1+Udref-γ2=800 (10)
Purpose is that control Inverter Station total voltage is not out-of-limit.Inverter Station is to different current margins in order in inverter side adapter electricity
Flow control temporary two station between do not produce instruction conflict.
2. blow-out angle, voltage mixing control：
As shown in figure 5, under blow-out angle, voltage mixed-control mode, an inversion is stood firm blow-out control, another Inverter Station
Determine voltage control.Coordination approach is：Fixed voltage-controlled Inverter Station gives voltage instruction Udref-u, current-order Io, and negative sense
Current margins Δ I1；The Inverter Station for determining gamma kick gives voltage instruction Udref- γ, and positive voltage margin Δ U, electric current
Instruct Io, and negative sense current margins Δ I2.Voltage instruction must meet following formula：
Udref-u+Udref-γ=800 (11)
3. full voltage is controlled：
As shown in fig. 6, under full voltage control mode, two Inverter Stations are to determine voltage control.Coordination approach is：Two inverse
Become station respectively to voltage instruction Udref-u1, Udref-u2, current-order Io, the current margins Δ I of negative sense1, Δ I2.Voltage instruction palpus
Meet：
Udref-u1+Udref-u2=800-IdR∑ (12)
Wherein, R∑For the resistance summation of all DC power transmission lines of multi-terminal system.Kept when so setting is for stable state
System dc voltage is 800kV, voltage instruction is automatically adjusted in transient process, it is ensured that Inverter Station operates steadily, it is to avoid commutation
The generation of the failures such as failure.
A kind of electromechanical transient state modeling method of direct current, this method includes：Build inverter side transverter model, rectification side transverter
Model and model of power transmission system；
Model of power transmission system is used to connect the inverter side transverter model and rectification side transverter model；
Inverter side transverter model includes the first inverter side transverter and the second inverter side transverter；
The voltage class of first inverter side transverter is more than the voltage class of the second inverter side transverter.
The machine-electricity transient model of rectification side transverter is shown below：
Udr=Udr0cosα-dxrIdr (13)
In formula, UdrFor the DC voltage of rectification side transverter；Udr0For rectification side ideal no-load direct voltage；α is rectification
Side transverter Trigger Angle；dxrFor rectification side commutating reactance；IdrFor rectification side DC current；
The Udr0It is calculated as follows：
Udr0=1.35Er (14)
In formula, ErFor rectification side converter transformer valve survey line voltage effective value.
The machine-electricity transient model of the inverter side transverter is shown below：
Udi=Udi0cosγ-dxiIdi (15)
In formula, UdiFor the DC voltage of inverter side transverter；Udi0For inverter side ideal no-load direct voltage；γ is inverse
Become side transverter blow-out angle；dxiFor inverter side commutating reactance；IdiFor inverter side DC current；
The Udi0It is calculated as follows：
Udi0=1.35Ei (16)
In formula, EiFor inverter side converter transformer valve survey line voltage effective value.
The model of power transmission system is shown below：
In formula, Udm：Voltage at DC node m；Uc：The voltage at electric capacity two ends；Rl：The resistance of transmission line of electricity；Idm：Direct current
Electric current at node m；Ll：The inductance of transmission line of electricity；Udn：Voltage at DC node n；Idn：Electric current at DC node n；C：
Electric capacity.
Coordinate system, including current control station and voltage control station between a kind of direct current machine-electricity transient model station；
Current control station includes：Converting plant, the electric current for controlling machine-electricity transient model；
Voltage-operated device includes：Inverter Station, the voltage for controlling machine-electricity transient model.
Inverter Station is using full gamma kick, blow-out angle and voltage mixing control and full voltage control to electromechanical transient mould
Voltage in type is controlled.
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 be using 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 be used in one or more computers for wherein including computer usable program code
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 the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.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 processor 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 is produced, 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 in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus 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.
Embodiments of the invention are these are only, are not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements done etc., be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (14)
1. a kind of direct current machine-electricity transient model, it is characterised in that the machine-electricity transient model includes DC side circuit model；
The DC side circuit model, is equivalent to controlled voltage source by the transverter of DC transmission system and seals in DC side network
End；
The DC side circuit model includes：Inverter side transverter, rectification side transverter and transmission line of electricity, it is described inverse for asking for
Become side transverter and rectification side transverter DC current size；
The inverter side transverter includes the first inverter side transverter and the second inverter side transverter；
The voltage class of the first inverter side transverter is more than the voltage class of the second inverter side transverter.
2. direct current machine-electricity transient model as claimed in claim 1, it is characterised in that the electromechanical transient of the rectification side transverter
Model is shown below：
Udr=Udr0 cosα-dxrIdr (1)
In formula, UdrFor the DC voltage of rectification side transverter；Udr0For rectification side ideal no-load direct voltage；α changes for rectification side
Flow device Trigger Angle；dxrFor rectification side commutating reactance；IdrFor rectification side DC current；
The Udr0It is calculated as follows：
Udr0=1.35Er (2)
In formula, ErFor rectification side converter transformer valve survey line voltage effective value.
3. direct current machine-electricity transient model as claimed in claim 1, it is characterised in that the electromechanical transient of the inverter side transverter
Model is shown below：
Udi=Udi0 cosγ-dxiIdi (3)
In formula, UdiFor the DC voltage of inverter side transverter；Udi0For inverter side ideal no-load direct voltage；γ is inverter side
Transverter blow-out angle；dxiFor inverter side commutating reactance；IdiFor inverter side DC current；
The Udi0It is calculated as follows：
Udi0=1.35Ei (4)
In formula, EiFor inverter side converter transformer valve survey line voltage effective value.
4. direct current machine-electricity transient model as claimed in claim 1, it is characterised in that the model of power transmission system such as following formula institute
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<mi>l</mi>
</msub>
<mfrac>
<mrow>
<msub>
<mi>dI</mi>
<mrow>
<mi>d</mi>
<mi>m</mi>
</mrow>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>n</mi>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>U</mi>
<mi>c</mi>
</msub>
<mo>-</mo>
<mfrac>
<mn>1</mn>
<mn>2</mn>
</mfrac>
<msub>
<mi>R</mi>
<mi>l</mi>
</msub>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>n</mi>
</mrow>
</msub>
<mo>-</mo>
<mfrac>
<mn>1</mn>
<mn>2</mn>
</mfrac>
<msub>
<mi>L</mi>
<mi>l</mi>
</msub>
<mfrac>
<mrow>
<msub>
<mi>dI</mi>
<mrow>
<mi>d</mi>
<mi>n</mi>
</mrow>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>6</mn>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>C</mi>
<mfrac>
<mrow>
<msub>
<mi>dU</mi>
<mi>c</mi>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>=</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>m</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>n</mi>
</mrow>
</msub>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>7</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula, Udm：Voltage at DC node m；Uc：The voltage at electric capacity two ends；Rl：The resistance of transmission line of electricity；Idm：DC node
Electric current at m；Ll：The inductance of transmission line of electricity；Udn：Voltage at DC node n；Idn：Electric current at DC node n；C：Electric capacity.
5. direct current machine-electricity transient model as claimed in claim 1, it is characterised in that the rectification side of the DC side circuit model
The DC voltage of transverter and inverter side transverter is calculated as follows：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>r</mi>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>r</mi>
</mrow>
</msub>
<mi>cos</mi>
<mi>&alpha;</mi>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>r</mi>
</mrow>
</msub>
<mi>d</mi>
<mi>x</mi>
<mi>r</mi>
<mo>-</mo>
<mo>&lsqb;</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>r</mi>
</mrow>
</msub>
<mi>cos</mi>
<mi>&alpha;</mi>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>r</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>d</mi>
<mi>x</mi>
<mi>r</mi>
<mo>+</mo>
<mfrac>
<msub>
<mi>R</mi>
<mi>d</mi>
</msub>
<mn>2</mn>
</mfrac>
<mo>)</mo>
</mrow>
<mo>-</mo>
<msub>
<mi>U</mi>
<mi>c</mi>
</msub>
<mo>&rsqb;</mo>
<mfrac>
<mrow>
<mi>L</mi>
<mi>s</mi>
<mi>r</mi>
</mrow>
<mrow>
<mi>L</mi>
<mi>s</mi>
<mi>r</mi>
<mo>+</mo>
<mfrac>
<msub>
<mi>L</mi>
<mi>d</mi>
</msub>
<mn>2</mn>
</mfrac>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<msub>
<mi>dxi</mi>
<mn>1</mn>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>+</mo>
<mo>&lsqb;</mo>
<msub>
<mi>U</mi>
<mi>c</mi>
</msub>
<mo>-</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>2</mn>
</msub>
<mo>+</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>dxi</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>dxi</mi>
<mn>2</mn>
</msub>
<mo>-</mo>
<mfrac>
<msub>
<mi>R</mi>
<mi>d</mi>
</msub>
<mn>2</mn>
</mfrac>
<mo>)</mo>
</mrow>
<mo>&rsqb;</mo>
<mfrac>
<mrow>
<msub>
<mi>Lsi</mi>
<mn>1</mn>
</msub>
</mrow>
<mrow>
<msub>
<mi>Lsi</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>Lsi</mi>
<mn>2</mn>
</msub>
<mo>+</mo>
<mfrac>
<msub>
<mi>L</mi>
<mi>d</mi>
</msub>
<mn>2</mn>
</mfrac>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>2</mn>
</msub>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<msub>
<mi>dxi</mi>
<mn>2</mn>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>+</mo>
<mo>&lsqb;</mo>
<msub>
<mi>U</mi>
<mi>c</mi>
</msub>
<mo>-</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>2</mn>
</msub>
<mo>+</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>dxi</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>dxi</mi>
<mn>2</mn>
</msub>
<mo>-</mo>
<mfrac>
<msub>
<mi>R</mi>
<mi>d</mi>
</msub>
<mn>2</mn>
</mfrac>
<mo>)</mo>
</mrow>
<mo>&rsqb;</mo>
<mfrac>
<mrow>
<msub>
<mi>Lsi</mi>
<mn>2</mn>
</msub>
</mrow>
<mrow>
<msub>
<mi>Lsi</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>Lsi</mi>
<mn>2</mn>
</msub>
<mo>+</mo>
<mfrac>
<msub>
<mi>L</mi>
<mi>d</mi>
</msub>
<mn>2</mn>
</mfrac>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>8</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula, Udr：The DC voltage of rectification side transverter；dxr：The phase change voltage drop resistance of rectification side transverter；Udi0r：Rectification
Side change of current busbar voltage；α：Rectification side transverter Trigger Angle；Rd：The resistance of DC side transmission line of electricity；Ld：DC side transmission line of electricity
Inductance；Uc：The voltage at electric capacity two ends；Lsr：The flat ripple reactance of rectification side transverter；Idr：The DC side electricity of rectification side transverter
Stream；Udi1：The voltage of first inverter side transverter；Udi0i1：The change of current busbar voltage of first inverter side transverter；γ1：First is inverse
Become the blow-out angle of side transverter；dxi1：The phase change voltage drop resistance of first inverter side transverter；Idi1：First inverter side transverter
Change of current bus current；Udi2：The voltage of second inverter side transverter；Udi0i2：The change of current busbar voltage of second inverter side transverter；
γ2：The blow-out angle of second inverter side transverter；dxi2：The phase change voltage drop resistance of second inverter side transverter；Idi2：Second inversion
The change of current bus current of side transverter；Lsi1And Lsi2：The flat ripple reactance of respectively the first and second inverter side transverters.
6. direct current machine-electricity transient model as claimed in claim 5, it is characterised in that the Idr、Idi1、Idi2And UcRespectively under
Formula is calculated and obtained：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<mi>I</mi>
<mi>c</mi>
</msub>
<mo>=</mo>
<mi>C</mi>
<mfrac>
<mrow>
<msub>
<mi>dU</mi>
<mi>c</mi>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>r</mi>
</mrow>
</msub>
<mo>-</mo>
<msub>
<mi>I</mi>
<mi>c</mi>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>U</mi>
<mi>c</mi>
</msub>
<mo>=</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>r</mi>
</mrow>
</msub>
<mi>c</mi>
<mi>o</mi>
<mi>s</mi>
<mi>&alpha;</mi>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>r</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>d</mi>
<mi>x</mi>
<mi>r</mi>
<mo>+</mo>
<msub>
<mi>R</mi>
<mi>d</mi>
</msub>
<mo>/</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mi>L</mi>
<mi>s</mi>
<mi>r</mi>
<mo>+</mo>
<msub>
<mi>L</mi>
<mi>d</mi>
</msub>
<mo>/</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
<mfrac>
<mrow>
<msub>
<mi>dI</mi>
<mrow>
<mi>d</mi>
<mi>r</mi>
</mrow>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>U</mi>
<mi>c</mi>
</msub>
<mo>=</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>dxi</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>R</mi>
<mi>d</mi>
</msub>
<mo>/</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>Lsi</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>L</mi>
<mi>d</mi>
</msub>
<mo>/</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
<mfrac>
<mrow>
<msub>
<mi>dI</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>1</mn>
</mrow>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>+</mo>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>0</mn>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<msub>
<mi>cos&gamma;</mi>
<mn>2</mn>
</msub>
<mo>-</mo>
<msub>
<mi>I</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
<msub>
<mi>dxi</mi>
<mn>2</mn>
</msub>
<mo>+</mo>
<msub>
<mi>Lsi</mi>
<mn>2</mn>
</msub>
<mfrac>
<mrow>
<msub>
<mi>dI</mi>
<mrow>
<mi>d</mi>
<mi>i</mi>
<mn>2</mn>
</mrow>
</msub>
</mrow>
<mrow>
<mi>d</mi>
<mi>t</mi>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>9</mn>
<mo>)</mo>
</mrow>
</mrow>
In formula, Idr：Rectification side DC current；Idi1：The change of current bus current of first inverter side transverter；Idi2：Second inverter side
The change of current bus current of transverter；Ic：Flow through the electric current of electric capacity；C：Electric capacity；Uc：The voltage at electric capacity two ends；Ic：Flow through electric capacity
Electric current；Idr：Rectification side DC current；Udi0r：Rectification side change of current busbar voltage；α：Rectification side transverter Trigger Angle；Rd：DC side
Resistance；Ld：DC side inductance；Lsr：The flat ripple reactance of rectification side transverter；Lsi1And Lsi2：Respectively the first and second inversions
The flat ripple reactance of side transverter；γ1：The blow-out angle of first inverter side transverter；γ2：The blow-out angle of second inverter side transverter.
7. the electromechanical transient state modeling method of a kind of direct current, it is characterised in that methods described includes：Structure inverter side transverter model,
Rectification side transverter model and model of power transmission system；
The model of power transmission system is used to connect the inverter side transverter model and rectification side transverter model；
The inverter side transverter model includes the first inverter side transverter and the second inverter side transverter；
The voltage class of the first inverter side transverter is more than the voltage class of the second inverter side transverter.
8. coordination approach between a kind of direct current machine-electricity transient model station, it is characterised in that coordination approach includes between the station：
Using converting plant, current-order control electric current is set；
Coordinate the voltage of the first Inverter Station of control and the second Inverter Station, the voltage of first Inverter Station and the second Inverter Station is existed
In certain limit；
The voltage class of first Inverter Station is more than the voltage class of the second Inverter Station.
9. coordination approach between direct current machine-electricity transient model station as claimed in claim 8, it is characterised in that the coordination control the
The method of one Inverter Station and the second Inverter Station includes：Voltage control method and gamma kick method.
10. coordination approach between direct current machine-electricity transient model station as claimed in claim 9, it is characterised in that the voltage control
Method includes：Issue voltage instruction, current-order, the current margins of negative sense；
The gamma kick method includes：Issue voltage instruction, the electric current of positive voltage margin, current-order, negative sense it is abundant
Degree；
11. coordination approach between direct current machine-electricity transient model station as claimed in claim 9, it is characterised in that the coordination control
The voltage of first Inverter Station and the second Inverter Station includes：First Inverter Station and the second Inverter Station use voltage controlling party
Method；
The voltage and direct current for the voltage instruction that the voltage control method is issued to first Inverter Station and the second Inverter Station are defeated
The voltage sum of electric line is specified threshold.
12. coordination approach between direct current machine-electricity transient model station as claimed in claim 9, it is characterised in that the coordination control
The voltage of first Inverter Station and the second Inverter Station includes：First Inverter Station and the second Inverter Station use gamma kick side
Method；
The voltage sum for the voltage instruction that the gamma kick method is issued to first Inverter Station and the second Inverter Station is
Specified threshold.
13. coordination approach between direct current machine-electricity transient model station as claimed in claim 9, it is characterised in that the coordination control
The voltage of first Inverter Station and the second Inverter Station includes, and voltage controlling party is respectively adopted in first Inverter Station and the second Inverter Station
Method and gamma kick method；
The voltage sum for the voltage instruction that the voltage instruction and gamma kick method that the voltage control method is issued are issued is
Voltage threshold.
14. coordinate system between a kind of direct current machine-electricity transient model station, it is characterised in that the system include current control module and
Voltage control module；
The current control module includes：Current-order is issued to converting plant, the electric current for controlling machine-electricity transient model；
The voltage control module includes：By coordination approach to sending instructions under the first Inverter Station and the second Inverter Station, for controlling
The voltage of machine-electricity transient model processed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108092299A (en) * | 2018-01-03 | 2018-05-29 | 南方电网科学研究院有限责任公司 | Homopolarity scissors crossing fault model method for building up and device between a kind of straight-flow system |
| CN112202193A (en) * | 2020-07-24 | 2021-01-08 | 国网江苏省电力有限公司检修分公司 | Valve bank online investment method and system for extra-high voltage layered access system and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801152A (en) * | 2012-07-09 | 2012-11-28 | 中国电力科学研究院 | Electromechanical transient model for cascade connection type multi-terminal direct current power transmission system and inter-station coordination method |
| CN106026154A (en) * | 2016-05-10 | 2016-10-12 | 南京邮电大学 | Modeling method for extra-high-voltage direct-current layered access power transmission system |
-
2017
- 2017-05-27 CN CN201710395845.9A patent/CN107317349B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801152A (en) * | 2012-07-09 | 2012-11-28 | 中国电力科学研究院 | Electromechanical transient model for cascade connection type multi-terminal direct current power transmission system and inter-station coordination method |
| CN106026154A (en) * | 2016-05-10 | 2016-10-12 | 南京邮电大学 | Modeling method for extra-high-voltage direct-current layered access power transmission system |
Non-Patent Citations (1)
| Title |
|---|
| 李少华等: ""特高压直流分层接入交流电网方式下直流控制系统设计"", 《中国电机工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092299A (en) * | 2018-01-03 | 2018-05-29 | 南方电网科学研究院有限责任公司 | Homopolarity scissors crossing fault model method for building up and device between a kind of straight-flow system |
| CN112202193A (en) * | 2020-07-24 | 2021-01-08 | 国网江苏省电力有限公司检修分公司 | Valve bank online investment method and system for extra-high voltage layered access system and storage medium |
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