CN105244876B - The emulation back method of HVDC transmission system failure wave-recording - Google Patents
The emulation back method of HVDC transmission system failure wave-recording Download PDFInfo
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- CN105244876B CN105244876B CN201510733362.6A CN201510733362A CN105244876B CN 105244876 B CN105244876 B CN 105244876B CN 201510733362 A CN201510733362 A CN 201510733362A CN 105244876 B CN105244876 B CN 105244876B
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Abstract
The present invention relates to a kind of emulation back methods of HVDC transmission system failure wave-recording, module, which is read in, by data obtains the amplitude and phase of converting plant and Inverter Station fault waveform voltage source before and after HVDC transmission system failure respectively, and the amplitude and phase of converting plant and Inverter Station ideal voltage source are adjusted respectively according to the amplitude and phase, it is consistent the amplitude and phase of itself and fault waveform voltage source；The on off state of control fault waveform voltage source breaker and ideal voltage source breaker is switched by switching control again, realize the steady switching of ideal voltage source and the fault waveform voltage source based on fault recorder data, avoid the process for repeatedly adjusting simulation parameter manually, reduce simulation times, the failure wave-recording automatic simulation playback of HVDC transmission system is realized, improves fault recurrence accuracy and simulation efficiency.
Description
Technical field
The present invention relates to power system fault simulation technical field, more particularly to a kind of HVDC transmission system failure
The emulation back method of recording.
Background technology
In the HVDC transmission system of actual motion, cause straight-flow system normal when AC system breaks down
During operation, current conversion station electrical secondary system will trigger current conversion station fault recording system, by each signal waveform of current conversion station before and after failure
It is preserved；If the true fault data of real system can be made good use of, in the detailed model of HVDC transmission system
Fault recurrence is carried out, engineering staff will be helped to analyze ac and dc systems and influenced each other mechanism, Optimal improvements DC control protection system
System, so as to improve the reliability of DC operation.
But since the control of straight-flow system wants the more of complexity compared with AC system, electrical quantity signal and control signal are far more
In AC transmission system, therefore corresponding DC Model simulation scale is huge, and single simulation time takes longer, thus its failure
Emulation playback is also faced with some problems：For example, how to choose appropriate fault recorder data so that DC control protects model
Physical fault situation can be really reacted as far as possible；DC transmission system fault recurrence precision how is improved, reduces emulation institute
Number is needed, improves fault simulation playback efficiency.
Traditional high-voltage direct current failure wave-recording emulation mode, does not solve above-mentioned technical barrier.
Invention content
Based on this, it is necessary to for above-mentioned technical problem, provide a kind of emulation of HVDC transmission system failure wave-recording
Back method.
A kind of emulation back method of HVDC transmission system failure wave-recording, includes the following steps：
Module, which is read in, by data obtains converting plant and Inverter Station ac bus before and after HVDC transmission system failure
Voltage waveform data, and export to the converting plant of HVDC transmission system simulation model and Inverter Station fault waveform voltage source；
It is respectively that the fault waveform voltage source and ideal voltage source of converting plant and Inverter Station is arranged side by side, and pass through breaker respectively
The ac bus of rectification side and inverter side is accessed, fault waveform voltage source breaker is disconnected, and by ideal voltage source breaker
It is closed；
The voltage magnitude and phase at moment are set before HVDC transmission system failure according to fault waveform voltage source, is led to
Voltage value and phase value signal expected from amplitude phase adjustment module output are crossed, and the voltage value and phase value signal are inputted
To ideal voltage source；
By the voltage value of ideal voltage source and phase value signal respectively with setting the moment before fault waveform voltage source failure
Voltage magnitude and phase are compared；When the voltage value and phase value signal of ideal voltage source are former with fault waveform voltage source respectively
When the amplitude at setting moment is consistent with phase before barrier, module output switching time-ofday signals are adjusted by amplitude phase；
It according to the switching instant signal, is switched by switching control and is closed fault waveform voltage source breaker, disconnect reason
Think voltage source breaker, emulation playback is carried out to HVDC transmission system failure wave-recording.
The emulation back method of above-mentioned HVDC transmission system failure wave-recording reads in module by data and obtains height respectively
The amplitude and phase of converting plant and Inverter Station fault waveform voltage source before and after pressure DC transmission system failure, and according to the amplitude
The amplitude and phase of converting plant and Inverter Station ideal voltage source are adjusted respectively with phase, make itself and fault waveform voltage source
Amplitude and phase be consistent；Control fault waveform voltage source breaker is switched by switching control again and ideal voltage source breaks
The on off state of road device is realized the steady switching of ideal voltage source and the fault waveform voltage source based on fault recorder data, is kept away
Exempt from the process of multiple adjustment simulation parameter manually, reduced simulation times, realize the failure record of HVDC transmission system
Wave automatic simulation plays back, and improves fault recurrence accuracy and simulation efficiency.
Description of the drawings
Fig. 1 is the emulation back method flow of the HVDC transmission system failure wave-recording of one embodiment of the present of invention
Figure；
Fig. 2 is to be walked in the emulation back method of the HVDC transmission system failure wave-recording of an alternative embodiment of the invention
The method flow diagram of rapid S3；
Fig. 3 is the structure diagram of both ends HVDC transmission system；
Fig. 4 is the monopole equivalent circuit diagram of traditional both ends HVDC transmission system；
Fig. 5 is arranged side by side for the failure wave-recording controlled voltage source and ideal voltage source of the Inverter Station of both ends HVDC transmission system
The structure diagram of model；
Fig. 6 is the width of the emulation back method of the HVDC transmission system failure wave-recording of an alternative embodiment of the invention
It is worth the fundamental diagram of phase adjusting module；
Fig. 7 is using fault waveform voltage source when manually adjusting and ideal voltage source waveform comparison schematic diagram；
Fig. 8 is using DC voltage fault simulation waveform when manually adjusting and practical recording comparison of wave shape schematic diagram；
Fig. 9 is the fault waveform electricity after the emulation back method using the HVDC transmission system failure wave-recording of the present invention
Potential source and ideal voltage source waveform comparison figure；
Figure 10 is the DC voltage after the emulation back method using the HVDC transmission system failure wave-recording of the present invention
Fault simulation waveform and practical recording comparison of wave shape schematic diagram.
Specific embodiment
In order to further illustrate the effect of the technological means of the invention taken and acquirement, below in conjunction with the accompanying drawings and preferably
Embodiment to technical scheme of the present invention, carries out clear and complete description.
As shown in FIG. 1, FIG. 1 is the emulation playback of the HVDC transmission system failure wave-recording of one embodiment of the present of invention
Method flow diagram.
A kind of emulation back method of HVDC transmission system failure wave-recording, includes the following steps：
Step S1：Converting plant before and after module obtains HVDC transmission system failure is read in by data to exchange with Inverter Station
The voltage waveform data of busbar, and export to converting plant and Inverter Station the fault waveform electricity of HVDC transmission system simulation model
Potential source；
Step S1：It is respectively that the fault waveform voltage source and ideal voltage source of converting plant and Inverter Station is arranged side by side, and lead to respectively
The ac bus of breaker access rectification side and inverter side is crossed, fault waveform voltage source breaker is disconnected, and by desired voltage
Source breaker closing；
Step S2：Set before HVDC transmission system failure according to fault waveform voltage source the moment voltage magnitude and
Phase adjusts voltage value and phase value signal expected from module output, and by the voltage value and phase value by amplitude phase
Signal is input to ideal voltage source；
Step S3：By the voltage value of ideal voltage source and phase value signal respectively with being set before fault waveform voltage source failure
The voltage magnitude and phase at moment are compared；When the voltage value and phase value signal of ideal voltage source are electric with fault waveform respectively
When the amplitude at setting moment is consistent with phase before potential source failure, passes through amplitude phase and adjust module output switching time-ofday signals；
Step S4：According to the switching instant signal, switched by switching control and be closed fault waveform voltage source breaker,
Ideal voltage source breaker is disconnected, emulation playback is carried out to HVDC transmission system failure wave-recording.
The emulation back method of above-mentioned HVDC transmission system failure wave-recording reads in module by data and obtains height respectively
The amplitude and phase of converting plant and Inverter Station fault waveform voltage source before and after pressure DC transmission system failure, and according to the amplitude
The amplitude and phase of converting plant and Inverter Station ideal voltage source are adjusted respectively with phase, make itself and fault waveform voltage source
Amplitude and phase be consistent；Control fault waveform voltage source breaker is switched by switching control again and ideal voltage source breaks
The on off state of road device is realized the steady switching of ideal voltage source and the fault waveform voltage source based on fault recorder data, is kept away
Exempt from the process of multiple adjustment simulation parameter manually, reduced simulation times, realize the failure record of HVDC transmission system
Wave automatic simulation plays back, and improves fault recurrence accuracy and simulation efficiency.
As shown in Fig. 2, the emulation that Fig. 2 is the HVDC transmission system failure wave-recording of an alternative embodiment of the invention is returned
Put the method flow diagram of step S3 in method.
In the present embodiment, it is described to incite somebody to action in the emulation back method of HVDC transmission system failure wave-recording of the invention
The voltage value and phase value signal of ideal voltage source respectively with before fault waveform voltage source failure set the moment voltage magnitude and
Phase is compared；When ideal voltage source voltage value and phase value signal respectively with being set before fault waveform voltage source failure when
When the amplitude at quarter is consistent with phase, the step of module output switches time-ofday signals is adjusted by amplitude phase and is included：
Step S301：According to the waveform peak data in HVDC transmission system failure prior fault waveform voltage source, calculate
Line voltage virtual value before fault waveform voltage source failure；
Step S302：Using the line voltage virtual value as the defeated of the effective value signal of line voltage of amplitude phase adjustment module
Go out signal, and the output signal is input to ideal voltage source；
Step S303：Module is adjusted by amplitude phase, calculates the voltage-phase value of ideal voltage source A phases；
Step S304：According to time difference minimum principle, it is identical with ideal voltage source amplitude to calculate fault waveform voltage source
Moment, and calculate the phase difference of the moment fault waveform voltage source and ideal voltage source；
Step S305：According to the voltage-phase value of the ideal voltage source A phases and the moment fault waveform voltage source and
The phase difference of ideal voltage source adjusts module by amplitude phase and ideal voltage source is adjusted；
Step S306：The phase value at moment and the phase value one of ideal voltage source are set before fault waveform voltage source failure
During cause, by amplitude phase adjust module generate start pulse signal, and by the start pulse signal into line broadening be delayed after
Module output switching time-ofday signals are adjusted by amplitude phase.
The emulation back method of HVDC transmission system failure wave-recording of the invention in one of the embodiments, institute
The step of stating the line voltage virtual value before calculating fault waveform voltage source failure includes：
In formula, UrmsRepresent line voltage virtual value, UpeakThe phase voltage at moment is set before expression fault waveform voltage source failure
Peak value.
The emulation back method of HVDC transmission system failure wave-recording of the invention in one of the embodiments, institute
State by amplitude phase adjust module, calculate ideal voltage source A phases voltage-phase value the step of include：
The amplitude phase adjusts module according to principle of phase lock loop, by inputting ideal voltage source three-phase voltage, calculates
To the phase value of ideal voltage source A phases.
The emulation back method of HVDC transmission system failure wave-recording of the invention in one of the embodiments, institute
State according to time difference minimum principle, calculate fault waveform voltage source it is identical with ideal voltage source amplitude at the time of the step of include：
In formula, t1, t2 are represented when same period internal fault waveform voltage source is identical with ideal voltage source amplitude respectively respectively
At the time of residing, T represents AC system voltage cycle.
The emulation back method of HVDC transmission system failure wave-recording of the invention in one of the embodiments, institute
The step of stating the phase difference for calculating the moment fault waveform voltage source and ideal voltage source includes：
In formula,Represent the phase difference of moment t fault waveform voltage source and ideal voltage source, t1, t2 represent same respectively
At the time of period internal fault waveform voltage source is respectively residing when identical with ideal voltage source amplitude, T represents AC system voltage week
Phase.
The emulation back method of HVDC transmission system failure wave-recording of the invention in one of the embodiments, institute
It states according to the voltage-phase value of the ideal voltage source A phases and the phase of the moment fault waveform voltage source and ideal voltage source
Difference adjusts the step of module is adjusted ideal voltage source by amplitude phase and includes：
In formula,Represent the phase after ideal voltage source adjustment,Represent the phase before ideal voltage source adjustment,
To represent the phase difference of moment t fault waveform voltage source and ideal voltage source, t1, t2 represent same period internal fault waveform respectively
At the time of voltage source is respectively residing when identical with ideal voltage source amplitude.
The emulation back method of HVDC transmission system failure wave-recording of the invention in one of the embodiments, institute
It states switching instant signal and meets following condition：
In formula, tonRepresent switching instant signal, t1, t2 represent same period internal fault waveform voltage source and desired electrical respectively
At the time of potential source amplitude is respectively residing when identical,Represent the phase difference of moment t fault waveform voltage source and ideal voltage source.
The emulation back method of HVDC transmission system failure wave-recording of the invention in one of the embodiments, institute
It states according to the switching instant signal, is switched by switching control and be closed fault waveform voltage source breaker, disconnect desired voltage
Source breaker, to including the step of carrying out emulation playback for HVDC transmission system failure wave-recording：
In formula, BRK, BRK1Represent that converting plant or Inverter Station fault waveform voltage source and ideal voltage source even break respectively
The state control signal of road device, BRK=0 represent that fault waveform voltage source breaker disconnects, and BRK=0 represents fault waveform voltage
Source breaker closing, BRK1=0 represents that ideal voltage source breaker disconnects, BRK1=1 represents ideal voltage source breaker closing, t
Represent simulation time, tonRepresent switching instant signal.
The emulation back method of above-mentioned HVDC transmission system failure wave-recording reads in module by data and obtains height respectively
The amplitude and phase of converting plant and Inverter Station fault waveform voltage source before and after pressure DC transmission system failure, and according to the amplitude
The amplitude and phase of converting plant and Inverter Station ideal voltage source are adjusted respectively with phase, make itself and fault waveform voltage source
Amplitude and phase be consistent；Control fault waveform voltage source breaker is switched by switching control again and ideal voltage source breaks
The on off state of road device is realized the steady switching of ideal voltage source and the fault waveform voltage source based on fault recorder data, is kept away
Exempt from the process of multiple adjustment simulation parameter manually, reduced simulation times, realize the failure record of HVDC transmission system
Wave automatic simulation plays back, and improves fault recurrence accuracy and simulation efficiency.
With reference to specific practical application, to the emulation back method of the HVDC transmission system failure wave-recording of the present invention
It is described in detail.
The present embodiment using a kind of the Summary of Power System Simulation Software PSCAD/EMTDC, wherein, electric system
CAD (Power Systems Computer Aided Design, PSCAD) is widely used electricity in the world
Magnetic Transient State Simulation Software；And direct solenoid Transient calculation program (Electromagnetic Transients including
DC, EMTDC) it is its simulation core, PSCAD provides pattern manipulation interface for EMTDC.In specific practical application, also may be used
With using the simulation software of other electric system.
As shown in figure 3, Fig. 3 is the structure diagram of both ends HVDC transmission system.
It should be noted that the both ends HVDC transmission system of the present embodiment works in specific voltage and current etc.
Grade, but these voltage class and topological structure are merely exemplary, can be also used for using the method for the present invention more complicated
The DC transmission system of more multi-voltage grade.
As shown in figure 4, Fig. 4 is the monopole equivalent circuit diagram of traditional both ends HVDC transmission system.
According to direct current conveying capacity analysis theories, the operation characteristic of transverter can be described by following 9 equations：
Wherein, PdAnd QdThe active power and reactive power of transverter conveying, U are represented respectivelydAnd IdEach change of current is represented respectively
The DC voltage and electric current of device, γ and μ represent corresponding blow-out angle and angle overlap respectively, and U and δ represent each transverter of inverter side respectively
The voltage of connected ac bus and phase angle, BcRepresent the equivalent susceptance of corresponding alternating current filter and reactive compensation capacitor, QcIt represents
Corresponding reactive compensation capacity, | Zk| represent that each transverter connects AC system equiva lent impedance, E represents that AC system is equivalent electronic
Gesture, C and K represent the constant related with converter power transformer parameter and straight-flow system.
For each transverter, γ, μ, U are sharedd、Id、Pd、Qd、U、δ、Pac、QacWith 11 variables such as E.Therefore, 9 are shared
A equation and 11 variables, above-mentioned equation is independent there are two state variable, as long as arbitrarily determining two of which variable, straight-flow system
Remaining each variable can be solved accurately.The present invention is exactly using this feature, by importing physical fault recorder data, is led to
The amplitude U of HVDC transmission system both sides ac bus voltage and phase δ is overregulated, is realized for HVDC transmission system
Fault simulation playback.
As shown in figure 5, Fig. 5 is the Inverter Station failure wave-recording controlled voltage source and desired electrical of both ends HVDC transmission system
The structure diagram of potential source model arranged side by side.
It should be noted that the model and method of adjustment due to rectification side and inverter side are consistent, this implementation
Example illustrates the basic step of the emulation back method of the HVDC transmission system failure wave-recording of the present invention only by taking inverter side as an example
Suddenly, rectification side is also same principle.
Inverter Station ac bus voltage waveform data before and after the data reading module read failure carried using PSCAD, it is defeated
Go out signal UACA, UACB, UACC and distinguish each single-phase voltage instantaneous value of Inverter Station ac bus before and after representing fault；By UACA,
UACB, UACC are respectively as the input signal of Inverter Station fault waveform voltage source model in simulation model；By fault waveform voltage
Source model is listed in by breaker on ac bus with desired voltage source model, at this time fault waveform voltage source circuit-breaker status
The value that the value of signal BRK is 0, BRK1 is 1, and fault waveform voltage source breaker disconnects, ideal voltage source breaker closing；Pass through
The amplitude and phase of amplitude phase adjustment module adjustment desired voltage source model, make itself and moment before fault waveform voltage source failure
Amplitude it is consistent with phase, and by amplitude phase adjust module export switching instant change control switching switch, switching when
It carves and changes circuit-breaker status, be closed false voltage source breaker, disconnect ideal voltage source breaker；So as to fulfill from desired voltage
Source waveform is to the steady switching of failure wave-recording.
As shown in fig. 6, the emulation that Fig. 6 is the HVDC transmission system failure wave-recording of an alternative embodiment of the invention is returned
Put the fundamental diagram of the amplitude phase adjustment module of method.
The input signal of the amplitude phase adjustment module includes ideal voltage source three-phase voltage and fault waveform voltage
The A phase voltages in source；The amplitude phase adjustment module includes line voltage virtual value computing unit, phase difference calculating unit and cuts
Change moment production unit.
1st, in on-Line Voltage virtual value computing unit, according to the waveform peak data in failure prior fault waveform voltage source, meter
The step of calculating the line voltage virtual value before fault waveform voltage source failure includes：
In formula, UrmsRepresent line voltage virtual value, UpeakThe phase voltage at moment is set before expression fault waveform voltage source failure
Peak value.
2nd, in phase difference calculating unit, according to time difference minimum principle, fault waveform voltage source and desired voltage are calculated
At the time of source amplitude is identical, and the step of calculating the phase difference of the moment fault waveform voltage source and ideal voltage source, includes：
1) according to time difference minimum principle, step at the time of calculating fault waveform voltage source is identical with ideal voltage source amplitude
Suddenly include：
In formula, t1, t2 are represented when same period internal fault waveform voltage source is identical with ideal voltage source amplitude respectively respectively
At the time of residing, T represents AC system voltage cycle；
50HZ AC systems correspond to the period as 0.02s, if if the selection at t1, t2 moment meets above-mentioned equation, then it represents that t1,
The t2 moment, which is chosen, meets time difference minimum principle, available for subsequently calculating, if not satisfied, then need to choose t1, t2 again, until
Until meeting above-mentioned inequality.
2) the step of phase difference of the calculating moment fault waveform voltage source and ideal voltage source includes：
In formula,Represent the phase difference of moment t fault waveform voltage source and ideal voltage source, t1, t2 represent same respectively
At the time of period internal fault waveform voltage source is respectively residing when identical with ideal voltage source amplitude, T represents AC system voltage week
Phase.
According to the voltage-phase value of the ideal voltage source A phases and the moment fault waveform voltage source and ideal voltage source
Phase difference, by amplitude phase adjust module ideal voltage source is adjusted the step of include：
In formula,Represent the phase after ideal voltage source adjustment,Represent the phase before ideal voltage source adjustment,
To represent the phase difference of moment t fault waveform voltage source and ideal voltage source, t1, t2 represent same period internal fault waveform respectively
At the time of voltage source is respectively residing when identical with ideal voltage source amplitude.
3rd, in switching instant production unit, the generation of switching instant signal should meet following condition：
In formula, tonRepresent switching instant signal, t1, t2 represent same period internal fault waveform voltage source and desired electrical respectively
At the time of potential source amplitude is respectively residing when identical,Represent the phase difference of moment t fault waveform voltage source and ideal voltage source.
It according to the switching instant signal, is switched by switching control and is closed fault waveform voltage source breaker, disconnect reason
Voltage source breaker is thought, to including the step of carrying out emulation playback for HVDC transmission system failure wave-recording：
In formula, BRK, BRK1Represent that converting plant or Inverter Station fault waveform voltage source and ideal voltage source even break respectively
The state control signal of road device, BRK=0 represent that fault waveform voltage source breaker disconnects, and BRK=0 represents fault waveform voltage
Source breaker closing, BRK1=0 represents that ideal voltage source breaker disconnects, BRK1=1 represents ideal voltage source breaker closing, t
Represent simulation time, tonRepresent switching instant signal.
As shown in fig. 7, Fig. 7 is to be illustrated using fault waveform voltage source when manually adjusting and ideal voltage source waveform comparison
Figure.Time of failure is 16.2s it can be seen from waveform, although failure prior fault waveform voltage source and ideal voltage source width
Value is substantially close to but phase still has difference.
As shown in figure 8, Fig. 8 is using DC voltage fault simulation waveform when manually adjusting and practical recording comparison of wave shape
Schematic diagram.Since failure prior fault waveform voltage source and the phase of ideal voltage source amplitude are deposited it can be seen from the waveform in Fig. 8
In difference, substantially disturbing occurs in DC voltage fault simulation waveform, and affects the accuracy of emulation.
As shown in figure 9, Fig. 9 be using the present invention HVDC transmission system failure wave-recording emulation back method after
Fault waveform voltage source and ideal voltage source waveform comparison schematic diagram.The height using the present invention it can be seen from the waveform in Fig. 9
The emulation back method of DC transmission system failure wave-recording is pressed, essentially eliminates fault moment prior fault waveform and ideal voltage source
Difference in amplitude and phase.
As shown in Figure 10, Figure 10 be using the present invention HVDC transmission system failure wave-recording emulation back method after
DC voltage fault simulation waveform and practical recording comparison of wave shape schematic diagram.
As seen from Figure 10, the emulation back method of HVDC transmission system failure wave-recording using the present invention, base
Originally the difference of fault moment prior fault waveform and ideal voltage source in amplitude and phase is eliminated so that in fault waveform voltage
When source switches with ideal voltage source, system disturbance is reduced, realizes the steady switching of the two, reduces time of repetition emulation
Number, improves fault recurrence simulation efficiency.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of emulation back method of HVDC transmission system failure wave-recording, which is characterized in that include the following steps：
Pass through the voltage of converting plant and Inverter Station ac bus before and after data reading module acquisition HVDC transmission system failure
Wave data, and the voltage waveform data is exported respectively to the converting plant in HVDC transmission system simulation model and inverse
Become station failure waveform voltage source；
It is respectively that the fault waveform voltage source and ideal voltage source of converting plant and Inverter Station is arranged side by side, and accessed respectively by breaker
The ac bus of rectification side and inverter side disconnects fault waveform voltage source breaker, and by ideal voltage source breaker closing；
The voltage magnitude and phase at moment are set before HVDC transmission system failure according to fault waveform voltage source, passes through width
It is worth voltage value and phase value signal expected from phase adjusting module output, and the voltage value and phase value signal is input to reason
Think voltage source；
By the voltage value of ideal voltage source and phase value signal respectively with before fault waveform voltage source failure set the moment voltage
Amplitude and phase are compared；When ideal voltage source voltage value and phase value signal respectively with before fault waveform voltage source failure
When the amplitude at setting moment is consistent with phase, passes through amplitude phase and adjust module output switching time-ofday signals；
It according to the switching instant signal, is switched by switching control and is closed fault waveform voltage source breaker, disconnect desired electrical
Potential source breaker carries out emulation playback to HVDC transmission system failure wave-recording.
2. the emulation back method of HVDC transmission system failure wave-recording according to claim 1, which is characterized in that institute
It states the voltage value of ideal voltage source and phase value signal respectively with setting the voltage amplitude at moment before fault waveform voltage source failure
Value and phase are compared；When the voltage value and phase value signal of ideal voltage source before fault waveform voltage source failure respectively with setting
When the amplitude that timing is carved is consistent with phase, the step of module output switches time-ofday signals is adjusted by amplitude phase and is included：
According to the waveform peak data in HVDC transmission system failure prior fault waveform voltage source, fault waveform voltage source is calculated
Line voltage virtual value before failure；
Using the line voltage virtual value as the output signal of the effective value signal of line voltage of amplitude phase adjustment module, and by institute
It states output signal and is input to ideal voltage source；
Module is adjusted by amplitude phase, calculates the voltage-phase value of ideal voltage source A phases；
According to time difference minimum principle, at the time of calculating fault waveform voltage source is identical with ideal voltage source amplitude, and institute is calculated
State the phase difference of moment fault waveform voltage source and ideal voltage source；
According to the voltage-phase value of the ideal voltage source A phases and the phase of the moment fault waveform voltage source and ideal voltage source
Potential difference adjusts module by amplitude phase and ideal voltage source is adjusted；
When the phase value that the moment is set before fault waveform voltage source failure is consistent with the phase value of ideal voltage source, pass through amplitude
Phase adjusting module generates start pulse signal, and passes through amplitude phase tune after the start pulse signal is delayed into line broadening
Mould preparation block output switching time-ofday signals；
It is described according to time difference minimum principle, calculate fault waveform voltage source it is identical with ideal voltage source amplitude at the time of the step of
Including：
In formula, t1, t2 represent respectively residing when same period internal fault waveform voltage source is identical with ideal voltage source amplitude respectively
At the time of, T represents AC system voltage cycle.
3. the emulation back method of HVDC transmission system failure wave-recording according to claim 2, which is characterized in that institute
The step of stating the line voltage virtual value before calculating fault waveform voltage source failure includes：
In formula, UrmsRepresent line voltage virtual value, UpeakThe phase voltage peak value at moment is set before expression fault waveform voltage source failure.
4. the emulation back method of HVDC transmission system failure wave-recording according to claim 2, which is characterized in that institute
State by amplitude phase adjust module, calculate ideal voltage source A phases voltage-phase value the step of include：
The amplitude phase adjusts module according to principle of phase lock loop, and by inputting ideal voltage source three-phase voltage, reason is calculated
Think the phase value of voltage source A phases.
5. the emulation back method of HVDC transmission system failure wave-recording according to claim 2, which is characterized in that institute
The step of stating the phase difference for calculating the moment fault waveform voltage source and ideal voltage source includes：
In formula,Represent the phase difference of moment t fault waveform voltage source and ideal voltage source, t1, t2 represent same period respectively
At the time of internal fault waveform voltage source is respectively residing when identical with ideal voltage source amplitude, T represents AC system voltage cycle.
6. the emulation back method of HVDC transmission system failure wave-recording according to claim 2, which is characterized in that institute
It states according to the voltage-phase value of the ideal voltage source A phases and the phase of the moment fault waveform voltage source and ideal voltage source
Difference adjusts the step of module is adjusted ideal voltage source by amplitude phase and includes：
In formula,Represent the phase after ideal voltage source adjustment,Represent the phase before ideal voltage source adjustment,To represent
The phase difference of moment t fault waveform voltage source and ideal voltage source, t1, t2 represent same period internal fault waveform voltage source respectively
At the time of respectively residing when identical with ideal voltage source amplitude.
7. the emulation back method of HVDC transmission system failure wave-recording according to claim 2, which is characterized in that institute
It states switching instant signal and meets following condition：
In formula, tonRepresent switching instant signal, t1, t2 represent same period internal fault waveform voltage source and ideal voltage source respectively
At the time of respectively residing when amplitude is identical,Represent the phase difference of moment t fault waveform voltage source and ideal voltage source.
8. the emulation back method of HVDC transmission system failure wave-recording according to claim 1, which is characterized in that institute
It states according to the switching instant signal, is switched by switching control and be closed fault waveform voltage source breaker, disconnect desired voltage
Source breaker, to including the step of carrying out emulation playback for HVDC transmission system failure wave-recording：
In formula, BRK, BRK1 represent that converting plant or Inverter Station fault waveform voltage source and ideal voltage source connect breaker respectively
State control signal, BRK=0 represents that fault waveform voltage source breaker disconnects, and BRK=0 represents that fault waveform voltage source breaks
Road device is closed, BRK1=0 represents that ideal voltage source breaker disconnects, BRK1=1 represents ideal voltage source breaker closing, and t is represented
Simulation time, tonRepresent switching instant signal.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1069666A1 (en) * | 1999-07-01 | 2001-01-17 | Abb Ab | Control of active power in a high voltage direct current transmission system |
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-
2015
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107092198B (en) * | 2016-02-17 | 2020-06-23 | 中国南方电网有限责任公司电网技术研究中心 | Fault analysis method and system for high-voltage direct-current transmission system |
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