CN106205306A - A kind of 35kV capacitance type potential transformer Simulation Model of Ferroresonance - Google Patents
A kind of 35kV capacitance type potential transformer Simulation Model of Ferroresonance Download PDFInfo
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- CN106205306A CN106205306A CN201610508575.3A CN201610508575A CN106205306A CN 106205306 A CN106205306 A CN 106205306A CN 201610508575 A CN201610508575 A CN 201610508575A CN 106205306 A CN106205306 A CN 106205306A
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- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
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- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
Abstract
The invention discloses a kind of 35kV capacitance type potential transformer Simulation Model of Ferroresonance, it includes two group capacitors, 35kV ac bus, three-phase alternating current potential source, capacitance type potential transformer and ferromagnetic resonance judge module and automatic harmonic elimination device, wherein: every group capacitor all accesses 35kV ac bus by corresponding chopper, and described three-phase alternating current potential source accesses 35kV ac bus；Described 35kV ac bus is three-phase alternating current bus, and each cross streams bus all corresponding access one ferromagnetic resonance judge module, capacitance type potential transformer and automatic harmonic elimination device；When there is ferromagnetic resonance, making two pulse generators produce positive pulse electric current simultaneously, putting into damping resistance；After ferromagnetic resonance disappears, two pulse generators are made to produce negative pulse current, first backed off after random damping resistance at a certain time interval.The occurrence condition of ferromagnetic resonance in real power system can be simulated by the present invention, finds the optimum controling strategy of suppression ferromagnetic resonance.
Description
Technical field
The present invention relates to a kind of 35kV electric power system model, imitating of a kind of capacitance type potential transformer ferromagnetic resonance
True mode.
Background technology
The widely used capacitance type potential transformer of 35kV bus (being called for short CVT) of 500kV transformer station of China carries out voltage survey
Amount.35kV and following electric pressure system are poor due to voltage transient characteristic, and CVT high-pressure side still uses fuse as protection.
In order to adjust system voltage in 500kV transformer station, compensating reactive power capacity, need frequent switching 35kV Shunt Capacitor Unit.Throwing
After entering 35kV Shunt Capacitor Unit, in electrical network, CVT high-pressure side fuse frequently fuses the fault even burst, and have impact on electricity
Net stable operation and the economy of station electricity consumption.Owing to close a floodgate CVT self ferromagnetic resonance caused that shoves of Capacitor banks is to cause CVT
A kind of reason of the abnormal fusing of primary side fuse.
When CVT works under rated voltage, intermediate transformer iron core unsaturation, excitatory reactance is very big, is equivalent to open circuit.When
There is overvoltage in primary side, excites the core sataration of intermediate transformer, and excitatory reactance will be caused to strongly reduce, and derided capacitors then holds
Easy and compensation reactor, intermediate transformer constitute LC resonance circuit, i.e. form so-called ferromagnetic resonance, thus easily cause CVT
There is over-current phenomenon avoidance in primary side.
Summary of the invention
For achieving the above object, the present invention proposes a kind of 35kV capacitance type potential transformer Simulation Model of Ferroresonance, logical
Cross the condition exciting capacitance type potential transformer ferromagnetic resonance when research Shunt Capacitor Unit puts into, automatic harmonic elimination device damps
The different of resistance throw the inhibition moving back strategy to ferromagnetic resonance, obtain the best approach of suppression ferromagnetic resonance.
For achieving the above object, the present invention adopts the technical scheme that:
A kind of 35kV capacitance type potential transformer Simulation Model of Ferroresonance, it includes that two group capacitors, 35kV exchange mother
Line, three-phase alternating current potential source, capacitance type potential transformer and ferromagnetic resonance judge module and automatic harmonic elimination device, wherein:
Every group capacitor all accesses 35kV ac bus by corresponding chopper, and described three-phase alternating current potential source accesses
35kV ac bus；Described 35kV ac bus is three-phase alternating current bus, and all corresponding access one of each cross streams bus is ferromagnetic
Resonance judge module, capacitance type potential transformer and automatic harmonic elimination device；
Described ferromagnetic resonance judge module is used for judging whether ferromagnetic resonance occurs, it include ammeter, voltmeter and
Oscillograph, described ammeter is serially connected with capacitance type potential transformer primary side, and described voltmeter is connected to corresponding cross streams bus
On, the outfan of described ammeter and voltmeter is connected to oscillograph；
The primary side of described capacitance type potential transformer is also connected on corresponding cross streams bus, and its secondary side connects and automatically disappears
Humorous device；
Described automatic harmonic elimination device includes two gate level turn-off thyristors, two damping resistances and two pulse generations
Device, wherein, the negative electrode of each gate level turn-off thyristor is connected respectively one end of a damping resistance, and each gate pole can close
The gate pole of disconnected IGCT is connected respectively the outfan of a pulse generator, and the anode of two gate level turn-off thyristors is equal
Being connected to one end of capacitance type potential transformer secondary side, the other end of two damping resistances is connected to capacitor voltage mutual inductance
The other end of device secondary side；
When there is ferromagnetic resonance, making two pulse generators produce positive pulse electric current simultaneously, putting into damping resistance；Work as ferrum
After magnetic resonance disappears, two pulse generators are made to produce negative pulse current, first backed off after random damping resistance at a certain time interval.
Described every group capacitor is the three-phase dual star topology mode of connection.
Described capacitance type potential transformer includes the first derided capacitors, the second derided capacitors, intermediate transformer, wherein, institute
Corresponding cross streams bus is accessed in the one end stating the first derided capacitors, and the other end passes through the second derided capacitors ground connection, described middle change
Depressor includes a winding and Secondary Winding, and described Secondary Winding includes remaining winding and main Secondary Winding, a described winding
Being connected on the second derided capacitors, described main Secondary Winding accesses secondary load, and described residue winding accesses corresponding automatically disappearing
Humorous device.
A compensation reactor is also concatenated on a described winding.
The resistance of said two damping resistance is 5-10 Ω, and described time interval is 0.1-0.3s.
The present invention compared with prior art, has the advantage that
1, by arrange two choppers close can verify shnt capacitor put into after inrush current whether can excite
Capacitance type potential transformer generation ferromagnetic resonance.The closing moment arranging two choppers can be verified under different operating mode, system
In excite the condition of ferromagnetic resonance；
2, by oscillograph voltage and current amplitude change and wave distortion can judge intuitively system is
No there occurs ferromagnetic resonance；
3, setting Rm1, Rm2 resistance as 5-10 Ω, during input, Rm1, Rm2 put into simultaneously, and post-set time is spaced apart 0.2s can
To reach best harmonic elimination effect, and will not when exiting re-initiation ferromagnetic resonance.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present invention a kind of 35kV capacitance type potential transformer Simulation Model of Ferroresonance；
Fig. 2 is the circuit of 35kV capacitance type potential transformer Simulation Model of Ferroresonance corresponding on single-phase bus in Fig. 1
Schematic diagram；
Fig. 3 is the circuit theory diagrams of capacitor；
Fig. 4 is the circuit theory diagrams of capacitance type potential transformer；
Fig. 5 is the circuit theory diagrams of automatic harmonic elimination device；
Fig. 6 is the transient emulation oscillogram of capacitance type potential transformer primary side (a winding side)；
Fig. 7 is the simulation waveform figure of capacitor switching current；
Fig. 8 is the simulation waveform figure of intermediate transformer voltage.
Detailed description of the invention
With detailed description of the invention, present disclosure is described in further details below in conjunction with the accompanying drawings.
Embodiment
Refer to shown in Fig. 1, a kind of 35kV capacitance type potential transformer Simulation Model of Ferroresonance, it includes Capacitor banks
11, Capacitor banks 12, chopper 21, chopper 22,35kV ac bus 3, three-phase alternating current potential source 4 and capacitor voltage
Transformer, ferromagnetic resonance judge module and automatic harmonic elimination device.Wherein, 35kV ac bus 3 includes A cross streams bus 31, B phase
Ac bus 32 and C cross streams bus 33, Capacitor banks 11 and Capacitor banks 12 are two groups of back-to-back shnt capacitors.Three intersect
The voltage of stream voltage source 4 is set as that 35kV, A phase voltage initial phase angle is 0 °, and B, C phase voltage differs 120 ° successively.Capacitor banks 11
Accessing 35kV ac bus 3 by chopper 21 and chopper 22 are in parallel respectively with Capacitor banks 12, three-phase alternating current potential source 4 is also
Access 35kV ac bus 3.Every cross streams bus is all corresponding connect a ferromagnetic resonance judge module, capacitance type potential transformer and
Automatic harmonic elimination device, i.e. A cross streams bus 31 connects ferromagnetic resonance judge module 51, capacitance type potential transformer 61 and automatically disappears
Humorous device 71；B cross streams bus 32 connects ferromagnetic resonance judge module 52, capacitance type potential transformer 62 and automatic harmonic elimination device
72；C cross streams bus 33 connects ferromagnetic resonance judge module 53, capacitance type potential transformer 63 and automatic harmonic elimination device 73.
Can the combined floodgate dash current after the present invention is able to verify that shnt capacitor employing back-to-back mode order input swash
Send out CVT (capacitance type potential transformer) and ferromagnetic resonance occurs, by arranging chopper 21, the closing moment of chopper 22, permissible
Simulate and inspire the voltage of CVT ferromagnetic resonance, current waveform under different operating mode, thus find out Shunt Capacitor Unit and most preferably close a floodgate
Time.The different control strategy qualities to ferromagnetic resonance inhibition in automatic harmonic elimination device can also be verified simultaneously.The present invention
The occurrence condition of ferromagnetic resonance in real power system can be simulated, find the optimum controling strategy of suppression ferromagnetic resonance.
As a example by the capacitance type potential transformer Simulation Model of Ferroresonance of A cross streams bus 31, other each phases are tied therewith
Structure is identical.Refer to shown in Fig. 2, ferromagnetic resonance judge module 51 is used for judging whether ferromagnetic resonance, and it includes electricity
Stream table 511, voltmeter 512 and oscillograph 513, ammeter 511 is serially connected with on A cross streams bus 31, and voltmeter 512 is connected to
On A cross streams bus 31, the outfan of ammeter 511 and voltmeter 512 is connected to oscillograph 513；Specifically ammeter 511 He
The positive input terminal of voltmeter 512 is connected on A cross streams bus 31, and the negative input end of ammeter 511 is connectable to capacitive battery
The primary side of pressure transformer 61, the negative input end ground connection of voltmeter 512.The secondary side of capacitance type potential transformer 61 accesses automatically
Harmonic elimination apparatus 71.
Amplitude and frequency by monitoring voltage judge whether ferromagnetic resonance, when there is ferromagnetic resonance, will put into
The damping resistance of automatic harmonic elimination device 71；After ferromagnetic resonance disappears, will move out the damping resistance of automatic harmonic elimination device 71.By showing
In ripple device, the waveform of voltage and current can judge whether there occurs ferromagnetic resonance in model intuitively.By arranging chopper
21, after chopper 22 closes and can verify Shunt Capacitor Unit 11,12 input, whether inrush current can excite CVT (capacitive battery
Pressure transformer 61) there is ferromagnetic resonance.Arrange chopper 21, moment that chopper 22 closes can be verified under different operating mode, mould
Type excites the condition of ferromagnetic resonance.
The structure of Capacitor banks is as it is shown on figure 3, every group capacitor all uses the three-phase dual star topology mode of connection, and its neutral point is not
Ground connection, single capacitance is 44.5uF, five and four strings, every phase capacitance (LCA, LCB or LCC) 111.25uF, current-limiting reactor
Resistance is 3.55 Ω, and reactance is 11mH, and its three-phase contact Conn1, Conn2, Conn3 access to A phase respectively through chopper 21
Ac bus 31, B cross streams bus 32 and C cross streams bus 33.
As shown in Figure 4, it includes derided capacitors C1, derided capacitors C2, middle change to the structure of capacitance type potential transformer 61
Depressor TV, wherein, A cross streams bus 31 is accessed in one end (Conn4) of derided capacitors C1, and the other end of derided capacitors C1 is by dividing
Voltage capacitance C2 ground connection, intermediate transformer TV includes a winding A1 and Secondary Winding, and Secondary Winding includes remaining winding A2 and master
Secondary Winding A3, one time winding A1 is connected on derided capacitors C2, and main Secondary Winding A3 accesses secondary load R1, remains winding A2
Two ends (Conn5 with Conn6) access corresponding automatic harmonic elimination device 71.A compensation reactor is also concatenated on winding A1
L1。
The model of capacitance type potential transformer 61 isSpecified phase voltage of winding A1
28.56kV, residue winding A2 rated voltage is 100/3V, and rated capacity is 50VA；The specified phase voltage of main Secondary Winding A3
57.74V, rated capacity 50VA.Derided capacitors C1, derided capacitors C2 capacitance are 0.04uF；Compensation reactor L1 resistance value
Being 321.3 Ω, reactance value is 114H.Compensation reactor L1 effect compensates the capacitive reactances of derided capacitors, reduces secondary electricity as far as possible
Pressure is with load variations.
The model of intermediate transformer TV have employed the saturation transformer module in Simulink, this module to transformator one
Secondary side directly hinders and leakage reactance, and secondary side directly hinders and leakage reactance, and excitation resistance and magnetic saturation characteristic all have corresponding parameter to arrange, can be relatively
The real characteristic simulating real transformer.
The structure of automatic harmonic elimination device 71 is as it is shown in figure 5, it includes that gate level turn-off thyristor GTO1, gate electrode capable of switching off are brilliant
Brake tube GTO2, damping resistance Rm1, damping resistance Rm2 and pulse generator P1 and pulse generator P2, wherein, gate pole can close
The negative electrode (k) of disconnected IGCT GTO1 connects one end of damping resistance Rm1, and the negative electrode (k) of gate level turn-off thyristor GTO2 connects
One end of damping resistance Rm2；The anode (a) of gate level turn-off thyristor GTO1 and gate level turn-off thyristor GTO2 connects formation
Terminal Conn7, is connected with one end (Conn5) of residue winding A2；The other end of damping resistance Rm1 and damping resistance Rm2 connects
Form terminal Conn8, be connected with the other end (Conn6) of residue winding A2；Gate level turn-off thyristor GTO1 and gate pole can close
The gate pole (g) of disconnected IGCT GTO2 connects pulse generator P1 and the outfan of pulse generator P2 respectively.
Automatic harmonic elimination device 71 can also judge whether ferromagnetic resonance simultaneously, and its principle is by gathering capacitive battery
The residue winding A2 voltage of pressure transformer 61 carries out FFT, obtains amplitude and the phase angle of voltage, when voltage magnitude exceedes
When 1.3Un and persistent period are more than 0.5s, it is judged that for there is ferromagnetic resonance.When judging to occur ferromagnetic resonance, by gate pole
The gate pole (g) of turn-off thyristor GTO1 and gate level turn-off thyristor GTO2 applies positive pulse electric current and turns it on, will damping
Resistance Rm1, damping resistance Rm2 access；When judging that ferromagnetic resonance disappears, by gate level turn-off thyristor GTO1 and gate pole
The gate pole (g) of turn-off thyristor GTO2 applies negative pulse current and turns it off, and damping resistance Rm1, damping resistance Rm2 is moved back
Go out.In automatic harmonic elimination device 71, damping resistance Rm1, the resistance of damping resistance Rm2 can set, GTO1,
The time that GTO2 turns on and off also can set.For phantom in the present invention, set Rm1, Rm2 resistance
For 5-10 Ω, during input, Rm1, Rm2 put into simultaneously, are spaced apart the harmonic elimination effect that 0.2s can reach best post-set time, and not
Meeting re-initiation ferromagnetic resonance when exiting.
Analysis of simulation result
Fig. 6 is the imitative of CVT primary side voltage after t=0.02s Shunt Capacitor Unit puts into, electric current and capacitor inrush phenomenon
True waveform.The waveform of CVT voltage only occurs in that in a cycle that transient overvoltage, maximum are about the 1.75 of rated voltage
Times.Transient current when capacitor puts into occurs the harmonic current that amplitude is higher in first cycle, but decay is quickly.?
In the transient process that capacitor puts into, CVT primary side current also occurs that peak value is up to the high frequency electric of 20A, and this electric current is at one
Substantially 0 is decayed in cycle.Illustrate that CVT primary side voltage waveform there occurs distortion in the transient process that capacitor puts into, produce
Overvoltage and high frequency transient current, may cause ferromagnetic resonance.
Fig. 7 and Fig. 8 is respectively the simulation waveform of capacitor switching current and intermediate transformer voltage, and A phase is in voltage first phase
Closing a floodgate when angle is 0, C phase is closed a floodgate when voltage initial angle 120 °, and the transient overvoltage of C phase and transient current are apparently higher than A phase.Say
Bright can inspire bigger harmonic current at voltage peaks combined floodgate, close a floodgate near null value, be not easy to inspire transient state
Harmonic current.
According to simulation analysis result: in the transient process that Capacitor banks puts into, CVT primary side voltage wave will be caused
Shape distorts, and ferromagnetic resonance occurs, and produces overvoltage and high frequency electric.The size of overvoltage and Capacitor banks combined floodgate moment voltage
Initial phase angle is relevant, and when combined floodgate initial phase angle is 90 °, the transient overvoltage inspired is maximum, it is easier to cause ferromagnetic resonance.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. a 35kV capacitance type potential transformer Simulation Model of Ferroresonance, it is characterised in that it include two group capacitors,
35kV ac bus, three-phase alternating current potential source, capacitance type potential transformer and ferromagnetic resonance judge module and automatic harmonic elimination dress
Put, wherein:
Every group capacitor all accesses 35kV ac bus by corresponding chopper, and described three-phase alternating current potential source accesses 35kV and hands over
Stream bus；Described 35kV ac bus is three-phase alternating current bus, and all corresponding ferromagnetic resonance that accesses of each cross streams bus is sentenced
Disconnected module, capacitance type potential transformer and automatic harmonic elimination device；
Described ferromagnetic resonance judge module is used for judging whether ferromagnetic resonance, and it includes ammeter, voltmeter and oscillography
Device, described ammeter is serially connected with capacitance type potential transformer primary side, and described voltmeter is connected on corresponding cross streams bus, institute
The outfan stating ammeter and voltmeter is connected to oscillograph；
The primary side of described capacitance type potential transformer is also connected on corresponding cross streams bus, and its secondary side connects automatic harmonic elimination dress
Put；
Described automatic harmonic elimination device includes two gate level turn-off thyristors, two damping resistances and two pulse generators,
Wherein, the negative electrode of each gate level turn-off thyristor is connected respectively one end of a damping resistance, each gate electrode capable of switching off
The gate pole of IGCT is connected respectively the outfan of a pulse generator, and the anode of two gate level turn-off thyristors all connects
Being connected to one end of capacitance type potential transformer secondary side, the other end of two damping resistances is connected to capacitance type potential transformer
The other end of secondary side；
When there is ferromagnetic resonance, making two pulse generators produce positive pulse electric current simultaneously, putting into damping resistance；When ferromagnetic humorous
Shake after disappearance, make two pulse generators produce negative pulse current, first backed off after random damping resistance at a certain time interval.
35kV capacitance type potential transformer Simulation Model of Ferroresonance the most according to claim 1, it is characterised in that often group
Capacitor is the three-phase dual star topology mode of connection.
35kV capacitance type potential transformer Simulation Model of Ferroresonance the most according to claim 1, it is characterised in that described
Capacitance type potential transformer includes the first derided capacitors, the second derided capacitors, intermediate transformer, wherein, described first dividing potential drop electricity
Corresponding cross streams bus is accessed in the one end held, and the other end passes through the second derided capacitors ground connection, and described intermediate transformer includes once
Winding and Secondary Winding, described Secondary Winding includes remaining winding and main Secondary Winding, and a described winding is connected to second point
In voltage capacitance, described main Secondary Winding accesses secondary load, and described residue winding accesses corresponding automatic harmonic elimination device.
35kV capacitance type potential transformer Simulation Model of Ferroresonance the most according to claim 3, it is characterised in that described
A compensation reactor is also concatenated on winding.
35kV capacitance type potential transformer Simulation Model of Ferroresonance the most according to claim 1, it is characterised in that two
The resistance of damping resistance is 5-10 Ω, and described time interval is 0.1-0.3s.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020805A (en) * | 2018-01-09 | 2018-05-11 | 广东电网有限责任公司电力科学研究院 | The ferromagnetic resonance determination methods and system of a kind of voltage transformer for electric power distribution network |
| CN108767815A (en) * | 2018-07-17 | 2018-11-06 | 云南电网有限责任公司红河供电局 | Electromagnetic potential transformer auto by pass harmonic elimination apparatus |
| CN111813000A (en) * | 2020-06-11 | 2020-10-23 | 广西电网有限责任公司电力科学研究院 | Method and device for simulating ferromagnetic resonance of power distribution network real-time test platform |
| CN115994505A (en) * | 2023-03-24 | 2023-04-21 | 山东泰开互感器有限公司 | Defect simulation model system of capacitive voltage transformer and implementation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006310692A (en) * | 2005-05-02 | 2006-11-09 | Kansai Electric Power Co Inc:The | Capacitance potential device |
| CN203014389U (en) * | 2012-12-30 | 2013-06-19 | 浙江紫光电器有限公司 | High-voltage reactive power automatic compensation device |
| CN104681261A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Equipotential mask capacitor type voltage transformer |
| CN105261268A (en) * | 2015-11-24 | 2016-01-20 | 国网重庆市电力公司电力科学研究院 | Simulation model for voltage transformer ferromagnetic resonance |
-
2016
- 2016-06-29 CN CN201610508575.3A patent/CN106205306B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006310692A (en) * | 2005-05-02 | 2006-11-09 | Kansai Electric Power Co Inc:The | Capacitance potential device |
| CN203014389U (en) * | 2012-12-30 | 2013-06-19 | 浙江紫光电器有限公司 | High-voltage reactive power automatic compensation device |
| CN104681261A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Equipotential mask capacitor type voltage transformer |
| CN105261268A (en) * | 2015-11-24 | 2016-01-20 | 国网重庆市电力公司电力科学研究院 | Simulation model for voltage transformer ferromagnetic resonance |
Non-Patent Citations (3)
| Title |
|---|
| 杜志叶等: "应用MATLAB/SIMULINK仿真研究铁磁谐振", 《高电压技术》 * |
| 杜志叶等: "铁磁谐振仿真模型的改进", 《继电器》 * |
| 欧阳沙: "投切10kV并联电容器的暂态过程研究", 《中国优秀硕士论文全文数据库》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020805A (en) * | 2018-01-09 | 2018-05-11 | 广东电网有限责任公司电力科学研究院 | The ferromagnetic resonance determination methods and system of a kind of voltage transformer for electric power distribution network |
| CN108767815A (en) * | 2018-07-17 | 2018-11-06 | 云南电网有限责任公司红河供电局 | Electromagnetic potential transformer auto by pass harmonic elimination apparatus |
| CN108767815B (en) * | 2018-07-17 | 2024-02-02 | 云南电网有限责任公司红河供电局 | Automatic bypass resonance elimination device of electromagnetic voltage transformer |
| CN111813000A (en) * | 2020-06-11 | 2020-10-23 | 广西电网有限责任公司电力科学研究院 | Method and device for simulating ferromagnetic resonance of power distribution network real-time test platform |
| CN115994505A (en) * | 2023-03-24 | 2023-04-21 | 山东泰开互感器有限公司 | Defect simulation model system of capacitive voltage transformer and implementation method |
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| CN106205306B (en) | 2019-06-14 |
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