CN115833124A - Converter station direct current near-zone resonance risk assessment method, device, equipment and medium - Google Patents
Converter station direct current near-zone resonance risk assessment method, device, equipment and medium Download PDFInfo
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Abstract
The invention discloses a direct-current near-zone resonance risk assessment method for a converter station, which relates to the technical field of converter stations and is used for solving the problem that the resonance risk of a system cannot be assessed currently, and the method comprises the following steps: equivalent harmonic modeling is carried out on a converter station alternating current side power grid, an alternating current filter and a synchronous phase modulator; constructing an analysis index according to the severity of harmonic resonance of the system; and carrying out high-voltage direct current near-region resonance risk assessment according to the modeling result and the analysis index. The invention also discloses a converter station direct current near zone resonance risk assessment device, electronic equipment and a computer storage medium. According to the method, the equivalent harmonic waves of the alternating current side power grid, the alternating current filter and the synchronous phase modulator of the converter station are modeled, so that a high-voltage direct current near-zone resonance risk assessment result is obtained.
Description
Technical Field
The invention relates to the technical field of converter stations, in particular to a converter station direct current near-zone resonance risk assessment method, device, equipment and medium.
Background
Energy resources in China are mostly distributed in the northwest, while energy requirements are mainly concentrated in the middle of the east. Since large-scale power supply construction in the middle east is limited for various reasons, energy needs to be transported from northwest to the middle east in order to achieve optimal allocation of energy resources between regions. Such energy transportation can lead to tremendous transportation pressure on traditional power transmission networks, and in this context, high voltage direct current transmission is increasingly used because of its advantages of long distance transmission and large capacity transmission. In addition, in order to improve the reactive support capability of the converter station and meet other requirements, an alternating current filter and a synchronous phase modulator are widely applied in a high-voltage direct current near region.
However, in recent years, harmonic exceeding occurs after a plurality of converter stations in the country operate an alternating current filter, and the accuracy of a traditional converter station direct current near-zone harmonic model and a resonance analysis method is limited, so that the influence of the converter station alternating current filter and a synchronous phase modulator on system resonance needs to be analyzed.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the objectives of the present invention is to provide a method for evaluating a risk of dc near-zone resonance of a converter station, which evaluates a risk of resonance by modeling an ac-side power grid, an ac filter and a synchronous phase modulator of the converter station and analyzing harmonic resonance.
One of the purposes of the invention is realized by adopting the following technical scheme:
a converter station direct current near-zone resonance risk assessment method comprises the following steps:
equivalent harmonic modeling is carried out on a converter station alternating current side power grid, an alternating current filter and a synchronous phase modulator;
constructing an analysis index according to the severity of harmonic resonance of the system;
and carrying out high-voltage direct current near-region resonance risk assessment according to the modeling result and the analysis index.
Further, the modeled model includes: the equivalent harmonic model of the AC side power grid, the equivalent harmonic model of the AC filter and the equivalent harmonic model of the synchronous phase modulator.
Further, the equivalent harmonic model of the alternating current side power grid satisfies the following conditions:
wherein h is the harmonic order, Z s.h Equivalent harmonic model at h-th order for the ac-side grid, U r For the nominal voltage, Q, of the high-voltage side of the system r Short circuit capacity of the system;
the double-tuned filter of the alternating-current side power grid comprises two equivalent single-tuned filter parameters, and meets the following requirements:
wherein, C a 、L a ，C b 、L b Capacitance, inductance value, N, of two equivalent single-tuned filters, respectively a double-tuned filter 1 、N 2 The number of times of tuning, Q, of two single-tuned filters respectively 1 And Q 2 Reactive design capacity, omega, for two single tuned filters respectively 1 Is the angular velocity of the fundamental frequency of the system;
according to the equivalent single-tuned filter parameters, the equivalent parameters of the double-tuned filter of the alternating-current side power grid meet the following conditions:
C 1 ＝C a +C b
wherein, C 1 、L 1 Main capacitor, main inductor, C of double-tuned filter 2 、L 2 The auxiliary capacitor and the auxiliary inductor of the double-tuned filter are respectively.
Further, the equivalent harmonic model of the alternating current filter satisfies:
wherein Z is f.h Equivalent harmonic model in h order, ω, for a double tuned filter h Is the angular velocity of the system at the h harmonic.
Further, the equivalent harmonic model of the synchronous phase modulator satisfies:
Z c.h ＝Z G.h +Z T.h ，
wherein Z is G.h ，Z T.h ，Z c.h The equivalent harmonic models in h order of synchronous phase modulator, step-up transformer and synchronous phase modulator branch, X 2 Is the negative sequence impedance per unit value, Q, of the synchronous phase modulator G Rated capacity, V, for synchronous phase-modulators S And l is the capacity margin ratio of the booster transformer.
Further, the analysis index includes h-th harmonic voltage and harmonic amplification coefficient after the filter is connected to the PCC point, and the h-th harmonic voltage V after the filter is connected to the PCC point post.h Satisfy the requirement of：
Wherein, I b.h Equivalent harmonic currents in h order, Z, for the AC side grid s.h Equivalent harmonic model in h order for the ac side grid, Z C.h Equivalent harmonic model in order h for synchronous phase-modifier branch, Z f.h An equivalent harmonic model at h-th order for the double tuned filter;
the harmonic amplification factor HAR satisfies:
wherein, V pre.h For h-order harmonic voltage before the filter is connected to a PCC point, the calculation satisfies the following conditions:
further, according to the modeling result and the analysis index, high-voltage direct current near-region resonance risk assessment is carried out, and the method comprises the following steps:
according to the modeling result, equivalent harmonic impedances of an alternating-current side power grid, a filter and a synchronous phase modulator are calculated;
calculating each harmonic amplification factor according to the equivalent harmonic impedance calculation result;
based on the harmonic voltage of the system, risk marking is carried out on the short-circuit capacity of the alternating-current side power grid, the operation capacity of an alternating-current filter and the rated capacity of a synchronous phase modulator, wherein each harmonic exceeds the single distortion rate after being amplified by a harmonic amplification coefficient;
and generating a harmonic resonance risk assessment graph of each harmonic according to the risk mark.
The second objective of the present invention is to provide a converter station dc near-zone resonance risk assessment apparatus, which performs equivalent harmonic modeling on a converter station to obtain a resonance risk assessment result.
The second purpose of the invention is realized by adopting the following technical scheme:
a converter station direct current near zone resonance risk assessment apparatus, comprising:
the model building module is used for carrying out equivalent harmonic modeling on a converter station alternating-current side power grid, an alternating-current filter and a synchronous phase modulator;
the index construction module is used for constructing an analysis index according to the severity of harmonic resonance of the system;
and the risk evaluation module is used for carrying out high-voltage direct current near-region resonance risk evaluation according to the modeling result and the analysis index.
It is a further object of the invention to provide an electronic device comprising a processor, a storage medium and a computer program, the computer program being stored in the storage medium and the computer program, when being executed by the processor, implementing the above method for assessing a risk of dc near resonance of a converter station.
It is a fourth object of the present invention to provide a computer readable storage medium storing one of the objects of the invention, having a computer program stored thereon, which computer program, when being executed by a processor, realizes the above described converter station dc near zone resonance risk assessment method.
Compared with the prior art, the invention has the beneficial effects that:
according to the method, equivalent harmonics of a converter station AC side power grid, an AC filter and a synchronous phase modulator are evaluated and modeled, and an analysis index is established to carry out risk judgment on whether the harmonics meet the national standard requirements, so that the risk of harmonic resonance of the system can be analyzed according to the real-time short circuit capacity of the system, the operation capacity of the synchronous phase modulator and the operation capacity of the filter.
Drawings
FIG. 1 is a flow chart of a method for assessing risk of direct current near zone resonance in a converter station according to an embodiment;
FIG. 2 is a flow diagram of a risk assessment method according to an embodiment;
FIG. 3 is a schematic diagram of an embodiment of a harmonic resonance risk assessment;
fig. 4 is a block diagram of a structure of a converter station dc near-zone resonance risk assessment apparatus according to a second embodiment;
fig. 5 is a block diagram of the electronic apparatus of the third embodiment.
Detailed Description
The present invention will now be described in more detail with reference to the accompanying drawings, in which the description of the invention is given by way of illustration and not of limitation. Various embodiments may be combined with each other to form other embodiments not shown in the following description.
Example one
The embodiment provides a converter station direct current near-zone resonance risk assessment method, which aims to perform equivalent harmonic modeling on a converter station alternating current side power grid, an alternating current filter and a synchronous phase modulator so as to further perform high-voltage direct current near-zone resonance risk assessment.
Based on the limitations of the existing research, the present embodiment provides a method for analyzing the resonance risk of a converter station in an ac filter and a synchronous phase modulator under different configuration capacities, and on this basis, provides a rapid dc near-zone resonance risk assessment technique for a converter station, which can provide a reference for a configuration scheme of the converter station filter capacity.
Referring to fig. 1, a method for evaluating a dc near resonance risk of a converter station includes the following steps:
s1, performing equivalent harmonic modeling on a current conversion station AC side power grid, an AC filter and a synchronous phase modulator;
in S1, the model specifically comprises an equivalent harmonic model of an alternating-current side power grid, an equivalent harmonic model of an alternating-current filter and an equivalent harmonic model of a synchronous phase modulator.
Wherein, the equivalent harmonic model of interchange side electric wire netting satisfies:
wherein h is the harmonic order, Z s.h H-time equivalence for AC-side power gridHarmonic model, U r For the nominal voltage, Q, of the high-voltage side of the system r Short circuit capacity of the system;
the converter station alternating current filter usually adopts a double-tuned filter, and in order to calculate an equivalent harmonic model of the double-tuned filter, two equivalent single-tuned filter parameters of the double-tuned filter need to be calculated first, so that the following requirements are met:
wherein, C a 、L a ，C b 、L b Capacitance, inductance values, N, of two equivalent single-tuned filters, respectively double-tuned filters 1 、N 2 The number of times of tuning, Q, of two single-tuned filters respectively 1 And Q 2 For the reactive design capacity, omega, of two single-tuned filters respectively 1 Is the angular velocity of the fundamental frequency of the system;
according to the equivalent single-tuned filter parameters, the equivalent parameters of the double-tuned filter of the alternating-current side power grid meet the following requirements:
C 1 ＝C a +C b
wherein, C 1 、L 1 Main capacitor, main inductor, C of double-tuned filter 2 、L 2 The auxiliary capacitor and the auxiliary inductor of the double-tuned filter are respectively.
The equivalent harmonic model of the alternating current filter satisfies the following conditions:
wherein Z is f.h Equivalent harmonic model in h order, ω, for a double tuned filter h Is the angular velocity of the system at the h harmonic.
The equivalent harmonic model of the synchronous phase modulator meets the following requirements:
Z c.h ＝Z G.h +Z T.h ，
wherein Z is G.h ，Z T.h ，Z c.h The equivalent harmonic models in h order of synchronous phase modulator, step-up transformer and synchronous phase modulator branch, X 2 Is the negative sequence impedance per unit value, Q, of the synchronous phase modulator G Rated capacity, V, for synchronous phase-modulators S And l is the capacity margin ratio of the booster transformer.
S2, establishing an analysis index according to the severity of harmonic resonance of the system;
in practical operation, the AC filter bank usually performs a series of switching operations to satisfy the requirements of system filtering,Reactive compensation and the like. However, since the equivalent impedance of the ac side power grid and the synchronous phase modulator is inductive, and the equivalent impedance of the ac filter is capacitive at the tuning point, when the two are equal at a certain frequency, a severe harmonic amplification phenomenon, called harmonic resonance, occurs, and the analysis index of the severity of the harmonic resonance includes the h-order harmonic voltage and the harmonic amplification coefficient after the filter is connected to the PCC point, and the h-order harmonic voltage V after the filter is connected to the PCC point post.h Satisfies the following conditions:
wherein, I b.h Equivalent harmonic currents in h order, Z, for the AC side grid s.h Equivalent harmonic model in h order for the ac side grid, Z C.H Equivalent harmonic model in order H for synchronous phase-modifier branch, Z f.H An equivalent harmonic model at H-th order for the double tuned filter;
the harmonic amplification factor HAR can be quantized by the impedance ratio before and after the PCC point operation ac filter, and satisfies:
although harmonic resonance is difficult to avoid, it is constrained by background harmonic content and harmonic amplification factor, and when the background harmonic is amplified by resonance and exceeds the limit of harmonic standard, the system operation filter has resonance risk. Wherein, V pre.g For h-order harmonic voltage before the filter is connected to a PCC point, the calculation satisfies the following conditions:
and S3, carrying out high-voltage direct current near-region resonance risk assessment according to the modeling result and the analysis index.
The short-circuit capacity commonly used by the AC side power grid of the 330kV converter station is 2296Mvar and 5000Mvar at present, so the system short-circuit capacity in the range is mainly considered. Because a group of characteristic secondary filters are usually put into or switched in the converter station at the same time, and a filter bank configuration scheme commonly used in the converter station is combined, the embodiment assumes that 11/13 and 24/36 secondary double-tuned filters are adopted in the converter station alternating current filter bank, and the reactive design capacities of the tuning points are equal. Meanwhile, the typical negative sequence parameter of the synchronous phase modulator based on the EMTDC/PSCAD platform is 0.255p.u, the short-circuit voltage of the booster transformer is 11.5%, the margin capacity ratio of the booster transformer is 1.2 and the like.
Based on the computational analysis of S1 and S2, S3 needs to analyze the interaction of AC filters and synchronous phase modulators with different capacities and AC side background harmonic impedance. Referring to fig. 2, S3 specifically includes:
s31, calculating equivalent harmonic impedances of an alternating-current side power grid, a filter and a synchronous phase modulator according to the modeling result;
s32, calculating each subharmonic amplification factor according to the equivalent harmonic impedance calculation result;
s33, based on the harmonic voltage of the system, risk marking is carried out on the short-circuit capacity of the alternating-current side power grid, the operation capacity of the alternating-current filter and the rated capacity of the synchronous phase modulator, wherein each harmonic exceeds a single distortion rate after being amplified by a harmonic amplification coefficient;
supposing that the 5 th harmonic voltage of an AC filter of a certain converter station is 1.0% when the converter station is not in operation, the single distortion rate of the network harmonic above 110kV is 1.6% due to the requirement of the harmonic standard of a public power grid, namely, the harmonic amplification factor exceeds 1.6 under the 5 th harmonic, and at the moment, the short-circuit capacity of the AC side power grid, the operation capacity of the AC filter and the rated capacity of a synchronous phase modulator corresponding to the system have resonance risks.
And S34, generating a harmonic resonance risk evaluation graph of each harmonic according to the risk marks.
Referring to the fig. 3 of the fig. 5 harmonic resonance risk assessment diagram of the converter station, it can be seen that the system harmonic amplification is caused by operating a specific ac filter capacity. With the risk assessment graph, to avoid such a risk situation from occurring for the user, the converter station typically circumvents the potential resonance point by changing the reactive commissioning capacity of the ac filter bank.
In conclusion, based on the resonance risk assessment chart, a user can quickly identify the resonance risk of the direct current near zone of the converter station according to the short circuit capacity, the filter operation capacity and the synchronous phase modulator operation capacity of the system.
Example two
An embodiment two discloses a device corresponding to the converter station direct current near zone resonance risk assessment method according to the above embodiment, which is a virtual device structure of the above embodiment, as shown in fig. 4, and includes:
the model building module 210 is used for performing equivalent harmonic modeling on a converter station alternating-current side power grid, an alternating-current filter and a synchronous phase modulator;
the index construction module 220 is used for constructing an analysis index according to the severity of the harmonic resonance of the system;
and a risk evaluation module 230 configured to perform high voltage direct current near-region resonance risk evaluation according to the modeling result and the analysis index.
The modeled model includes: the equivalent harmonic model of the AC side power grid, the equivalent harmonic model of the AC filter and the equivalent harmonic model of the synchronous phase modulator.
The analysis indexes comprise h-order harmonic voltage and a harmonic amplification coefficient after the filter is connected to the PCC point, and the h-order harmonic voltage Vpost.h after the filter is connected to the PCC point meets the following requirements:
wherein Ib.h is equivalent harmonic current of the alternating-current side power grid at h order, Z s.h Equivalent harmonic model in h order for the ac side grid, Z C.h Equivalent harmonic model in order h for the synchronous phase modulator branch, Z f.h An h-order equivalent harmonic model of the double tuned filter;
the harmonic amplification factor HAR satisfies:
wherein Vpre.h is h harmonic voltage before the filter is connected to the PCC point, and the calculation satisfies the following conditions:
and performing high-voltage direct current near-region resonance risk assessment according to the modeling result and the analysis index, wherein the method comprises the following steps:
according to the modeling result, equivalent harmonic impedances of an alternating-current side power grid, a filter and a synchronous phase modulator are calculated;
calculating each subharmonic amplification factor according to the equivalent harmonic impedance calculation result;
based on the harmonic voltage of the system, risk marking is carried out on the short-circuit capacity of the alternating-current side power grid, the operation capacity of an alternating-current filter and the rated capacity of a synchronous phase modulator, wherein each harmonic exceeds the single distortion rate after being amplified by a harmonic amplification coefficient;
and generating a harmonic resonance risk assessment graph of each harmonic according to the risk mark.
EXAMPLE III
Fig. 5 is a schematic structural diagram of an electronic device according to a third embodiment of the present invention, as shown in fig. 5, the electronic device includes a processor 310, a memory 320, an input device 330, and an output device 340; the number of the processors 310 in the computer device may be one or more, and one processor 310 is taken as an example in fig. 5; the processor 310, the memory 320, the input device 330 and the output device 340 in the electronic apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 5.
The memory 320 is a computer readable storage medium and may be used for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the method for evaluating a risk of dc near resonance of a converter station according to an embodiment of the present invention. The processor 310 executes various functional applications and data processing of the electronic device by running the software programs, instructions and modules stored in the memory 320, so as to implement the converter station dc near-zone resonance risk assessment method according to the first embodiment.
The memory 320 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 320 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 320 may further include memory located remotely from the processor 310, which may be connected to the electronic device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 330 may be used to receive input of user identification information, grid data, and the like. The output device 340 may include a display device such as a display screen.
Example four
The fourth embodiment of the present invention further provides a storage medium containing computer-executable instructions, where the storage medium may be used for a computer to execute a converter station dc near-zone resonance risk assessment method, where the method includes:
equivalent harmonic modeling is carried out on a converter station alternating current side power grid, an alternating current filter and a synchronous phase modulator;
constructing an analysis index according to the severity of harmonic resonance of the system;
and carrying out high-voltage direct current near-region resonance risk assessment according to the modeling result and the analysis index.
Of course, the storage medium containing the computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the converter station dc near zone resonance risk assessment method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling an electronic device (which may be a mobile phone, a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the method and device for evaluating a risk of dc near-field resonance based on a converter station, the included units and modules are only divided according to functional logic, but are not limited to the above division as long as corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
Various other modifications and changes may occur to those skilled in the art based on the foregoing teachings and concepts, and all such modifications and changes are intended to be included within the scope of the appended claims.
Claims (10)
1. A converter station direct current near-zone resonance risk assessment method is characterized by comprising the following steps:
equivalent harmonic modeling is carried out on a converter station alternating current side power grid, an alternating current filter and a synchronous phase modulator;
constructing an analysis index according to the severity of harmonic resonance of the system;
and carrying out high-voltage direct current near-region resonance risk assessment according to the modeling result and the analysis index.
2. The method for assessing risk of converter station direct current near zone resonance according to claim 1, characterized in that said modelled model comprises: the equivalent harmonic model of the AC side power grid, the equivalent harmonic model of the AC filter and the equivalent harmonic model of the synchronous phase modulator.
3. The method for assessing the risk of converter station direct current near zone resonance according to claim 2, wherein the equivalent harmonic model of the alternating current side power grid satisfies:
wherein h is the harmonic order, Z s.h Equivalent harmonic model in h order for the ac side grid, U r For the nominal voltage, Q, of the high-voltage side of the system r Short circuit capacity of the system;
the double-tuned filter of the alternating-current side power grid comprises two equivalent single-tuned filter parameters, and meets the following requirements:
wherein, C a 、L a ，C b 、L b Capacitance, inductance value, N, of two equivalent single-tuned filters, respectively a double-tuned filter 1 、N 2 The number of times of tuning, Q, of two single-tuned filters respectively 1 And Q 2 Are respectively twoReactive design capacity, omega, of a single tuned filter 1 Is the angular velocity of the fundamental frequency of the system;
according to the equivalent single-tuned filter parameters, the equivalent parameters of the double-tuned filter of the alternating-current side power grid meet the following requirements:
C 1 ＝C a +C b
wherein, C 1 、L 1 Main capacitor, main inductor, C of double-tuned filter 2 、L 2 The auxiliary capacitor and the auxiliary inductor of the double-tuned filter are respectively.
4. The method for assessing the risk of converter station dc near resonance according to claim 2, wherein the equivalent harmonic model of the ac filter satisfies:
wherein Z is f.h Equivalent harmonic model in h order, ω, for a double tuned filter h Is the angular velocity of the system at the h harmonic.
5. The method for assessing the risk of converter station dc near resonance according to claim 2, wherein the equivalent harmonic model of the synchronous phase modulator satisfies:
Z c.h ＝Z G.h +Z T.h ，
wherein Z is G.h ，Z T.h ，Z C.h The equivalent harmonic models in h order of synchronous phase modulator, step-up transformer and synchronous phase modulator branch, X 2 Is the negative sequence impedance per unit value, Q, of the synchronous phase modulator G Rated capacity, V, for synchronous phase-modulators S And l is the capacity margin ratio of the booster transformer.
6. The method according to claim 1, wherein the analysis index includes an h-th harmonic voltage and a harmonic amplification factor after a filter is connected to a PCC point, and the h-th harmonic voltage V after the PCC point is connected to the filter post，h Satisfies the following conditions:
wherein, I b.h Equivalent harmonic currents in h order, Z, for the AC side grid s.h Equivalent harmonic model in h order for the ac side grid, Z C.h Equivalent harmonic model in order h for synchronous phase-modifier branch, Z f.h An equivalent harmonic model at h-th order for the double tuned filter;
the harmonic amplification factor HAR satisfies:
wherein, V pre.h H-order harmonic electricity before PCC point for filter accessAnd (3) pressure, which is calculated to satisfy:
7. the method according to claim 1, wherein the performing a high voltage direct current near resonance risk assessment according to the modeling result and the analysis index comprises:
according to the modeling result, equivalent harmonic impedances of an alternating-current side power grid, a filter and a synchronous phase modulator are calculated;
calculating each harmonic amplification factor according to the equivalent harmonic impedance calculation result;
based on the harmonic voltage of the system, risk marking is carried out on the short-circuit capacity of the alternating-current side power grid, the operation capacity of the alternating-current filter and the rated capacity of the synchronous phase modulator, wherein each harmonic exceeds a single distortion rate after being amplified by a harmonic amplification coefficient;
and generating a harmonic resonance risk assessment graph of each harmonic according to the risk mark.
8. A converter station direct current near zone resonance risk assessment device is characterized by comprising:
the model building module is used for carrying out equivalent harmonic modeling on a converter station alternating-current side power grid, an alternating-current filter and a synchronous phase modulator;
the index construction module is used for constructing an analysis index according to the severity of harmonic resonance of the system;
and the risk evaluation module is used for carrying out high-voltage direct current near-region resonance risk evaluation according to the modeling result and the analysis index.
9. An electronic device comprising a processor, a storage medium, and a computer program, the computer program being stored in the storage medium, characterized in that the computer program, when being executed by the processor, is adapted to carry out the method of converter station dc near zone resonance risk assessment according to any of claims 1 to 7.
10. A computer readable storage medium having a computer program stored thereon, wherein the computer program, when being executed by a processor, is adapted to carry out the method of converter station dc near zone resonance risk assessment according to any of the claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116822436A (en) * | 2023-06-30 | 2023-09-29 | 四川大学 | Oscillation risk sensitivity analysis method for direct-current transmission end alternating-current system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116822436A (en) * | 2023-06-30 | 2023-09-29 | 四川大学 | Oscillation risk sensitivity analysis method for direct-current transmission end alternating-current system |
| CN116822436B (en) * | 2023-06-30 | 2024-02-27 | 四川大学 | Oscillation risk sensitivity analysis method for direct-current transmission end alternating-current system |
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