CN200965824Y - Capacitance type voltage mutual-inductor model for dynamic analog test - Google Patents
Capacitance type voltage mutual-inductor model for dynamic analog test Download PDFInfo
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- CN200965824Y CN200965824Y CN 200620132039 CN200620132039U CN200965824Y CN 200965824 Y CN200965824 Y CN 200965824Y CN 200620132039 CN200620132039 CN 200620132039 CN 200620132039 U CN200620132039 U CN 200620132039U CN 200965824 Y CN200965824 Y CN 200965824Y
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Abstract
The utility model discloses a dynamic simulated experiment adopting capacitance type voltage mutual inductor mould, relating to the dynamic simulated experiment of electric power system. In the simulated output circuit, a 100V voltage signal which is gained through a voltage mutual inductor goes through a coupling loop and is input to a primary winding of a power amplifier and an output transformer. The voltage signal is output through the power amplifier and the output transformer. In the arrangement, the transformer and inductance components are away from electronic components such as the amplifier; when the inductance and electric power transformer and the output transformer are arranged, magnetic lines are orthometric mutually to increase the jamming resistance capability. A rectification circuit of the electric power transformer can serve as the working electric power of an audio frequency amplifier; two amplifiers are arranged on a hybrid chip is and only one amplifier can be applied when working. The amplifiers are connected with circuits which can adjust the plus of amplifiers. The output signal of the amplifiers is subordinately coupling output through an output transformer. The utility model can exactly simulate the steady state characteristics and dynamic response characteristics. The utility model has the advantages of compact structure and strong jamming resistance capability.
Description
Technical field
The utility model relates to the dynamic analog test capacitance type potential transformer Model Design of electric power system, the capacitance type potential transformer model that especially a kind of dynamic analog test is used.
Background technology
Generally adopt in the middle of the modern electrical power trans mission/distribution system capacitance type potential transformer (CVT) as with the connected mode of secondary device.In electric power system, require to insert the various protective devices in the electric power system, also must satisfy the dynamic response characteristic of capacitance type potential transformer (CVT), can reliable and correct operation with the protective device that guarantees connecting system.For examination under laboratory condition inserts the performance of the various protective devices of electric power system and the reliability of action, require under laboratory condition, to simulate the dynamic response characteristic of CVT.The capacitance type potential transformer model that the dynamic analog test of institute's Development and design is used, its dynamic response characteristic all should be consistent with CVT in the real system with steady-state characteristic, satisfies the stable state of the CVT that moves in the simulation electric power system in the laboratory and the actual effect of dynamic response characteristic.
The requirement of capacitance type potential transformer to operation in the electric power system is: when its HV Terminal is short-circuited under rated voltage, the main secondary side voltage that has 0～100% rated load (power factor is) at 1 o'clock should be reduced to short circuit in a cycle of rated frequency before 10% of voltage peak.For the capacitance type potential transformer that adopts quick protective relaying device, its value should be little of 5%.The technological difficulties of capacitance type potential transformer model are to guarantee to transmit under the prerequisite of magnitude accuracy the correct dynamic response characteristic that simulates the capacitance type potential transformer that moves in electric power system.
Up to the present, do not see that there is the report of this capacitance type potential transformer modelling scheme domestic and international associated dynamic simulation laboratory.Still using electromagnetic potential transformer to carry out dynamic analog test in domestic other Electrical Power System Dynamic simulation field, this has obviously differently with the electric power system practical operation situation, and the difference of the dynamic response characteristic of simulation generation is conspicuous thus.
Summary of the invention
In order to address the above problem, the purpose of this utility model provides a kind of laboratory capacitance type potential transformer model, can under lab simulate the steady-state characteristic and the dynamic response characteristic of the capacitance type potential transformer that moves in the electric power system.
The technical scheme in the invention for solving the technical problem is:
In breadboard analog output circuit, the voltage signal of the 100V/ that obtains by voltage transformer, the coupling circuit of forming through electric capacity, inductance, resistance is input to power amplifier A, through arriving the primary coil of output transformer after the power amplification, the voltage signal of this output transformer output has identical phase place and amplitude with the voltage signal that obtains at voltage transformer.
In the circuit of capacitance type potential transformer, voltage signal inserts the polyphone loop of capacitor C 1 and inductance L 1 through input socket, after arriving the shunt circuit of capacitor C 2 and inductance L 2 again, place in circuit element region circuit board (PCB) carries out signal processing, signal after the processing carries out power amplification to accessory power outlet through power amplifier, exports through output transformer.
Capacitance type potential transformer power transformer (BYQ1) wherein provides the direct voltage of work for power amplifier provides power supply for power amplifier after the rectifier cell rectification of power transformer output voltage in circuit element district interior circuit board.
In the layout of capacitance type potential transformer, transformer, inductance element are away from electronic components such as amplifiers, and the magnetic line of force is mutually orthogonal to increase antijamming capability when inductance L 1, L2, power transformer (BYQ1), output transformer (BYQ2) installation.
After voltage transformer (TV) obtained the voltage signal of 100V/ , through electric capacity, inductance element and resistor voltage divider circuit, the circuit accessing to audio amplifier after dividing potential drop, signal end was L, and simulation ground is G.
The rectification circuit of power transformer is packaged with two amplifiers as the working power of audio frequency amplifier in the integrated chip, only use one of them amplifier during work, and another is not worked.Amplifier is connected with the circuit of adjusting amplifier gain.The output signal of amplifier directly inserts the elementary of output transformer behind resistance, capacitor filtering loop filter, through the output transformer time satisfactory voltage signal of utmost point coupling output.
Owing to adopted above-mentioned technical scheme, the beneficial effect that the utility model had is: steady-state characteristic and the dynamic response characteristic that can under lab simulate the capacitance type potential transformer that moves in the electric power system exactly, and compact conformation, rationally distributed, occupy little space, low in energy consumption, antijamming capability is strong.
Description of drawings
Fig. 1 is capacitance type potential transformer model place in circuit figure of the present utility model;
Fig. 2 is capacitance type potential transformer model structure figure of the present utility model;
Fig. 3 is capacitance type potential transformer modular concept figure of the present utility model;
Fig. 4 is a capacitance type potential transformer model system isopleth map of the present utility model;
Fig. 5 is capacitance type potential transformer modelling effect figure of the present utility model.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Referring to Fig. 1, laboratory's system voltage is 1500V, after voltage transformer 1500V/ (100V/ ) step-down, inserts the capacitance type potential transformer model, and it is 1/1 that model carries out no-load voltage ratio, through the signal waveform of capacitance type potential transformer model output as shown in Figure 5.This modeling the characteristic of capacitance type potential transformer.
The voltage signal of the 100V/ that obtains by voltage transformer (VT) as shown in Figure 1, the coupling circuit of forming through electric capacity, inductance, resistance is input to power amplifier A through arriving the primary coil of output transformer after the power amplification, and the no-load voltage ratio of transformer guarantees that the voltage signal of secondary coil output has identical phase place and amplitude with the voltage signal that obtains at VT.
The structure of capacitance type potential transformer (CVT) as shown in Figure 2, after voltage signal arrives the shunt circuit of C2 and L2 through input socket access capacitor C 1 again with the polyphone loop of inductance L 1, place in circuit element region circuit board carries out signal processing, signal after the processing carries out power amplification to accessory power outlet through power amplifier, exports through output transformer.
Power transformer among Fig. 2 provides power supply for power amplifier, and the direct voltage of work is provided for power amplifier after the rectifier cell (see figure 3) rectification of power transformer output voltage in circuit element district interior circuit board.
The layout of Fig. 2 mainly is to consider that connecting line is short as far as possible, and transformer, inductance element require the magnetic line of force mutually orthogonal to increase antijamming capability as far as possible away from electronic components such as amplifiers when inductance L 1, L2, power transformer, output transformer installation.
After the top of Fig. 3 was the voltage signal of the 100V/ that obtains of voltage transformer VT, through electric capacity, inductance element and resistor voltage divider circuit, the circuit accessing to audio amplifier after dividing potential drop, L (Huang) was a signal end, and G (orchid) is simulation ground.
Rectifier cell among Fig. 3 is the rectification circuit of power transformer, it is the circuit that working power is provided for audio frequency amplifier, two amplifiers are encapsulated in the integrated chip about among the figure, only use the amplifier in left side during the work of this device, not working of right side, 1 pin of amplifier be+import, and 2 pin are-import, 10 pin are output, and the resistance that links to each other with amplifier, electric capacity mainly are the circuit of adjusting amplifier gain.Amplifier 10 pin output signals directly insert the elementary of output transformer behind resistance, capacitor filtering loop filter, through the output transformer time satisfactory voltage signal of utmost point coupling output.
Fig. 4 is the physical model schematic diagram of capacitance type potential transformer, and voltage VP/N is through capacitor C 1, and the C2 dividing potential drop is after the leakage reactance of instrument transformer and resistance LT, RT output.LM, RM simulate magnetizing inductance and iron loss respectively, and ZL is a load impedance, and VS is an output voltage.
Fig. 5 is under identical working condition, insert capacitance type potential transformer and the output waveform output waveform that does not insert capacitance type potential transformer, wherein, last figure is the waveform that inserts capacitance type potential transformer, figure below is the waveform that does not insert capacitance type potential transformer, two difference be significantly, last figure when generation lack record after waveform one transitional processes is arranged, figure below does not then have this process.
Claims (2)
- The capacitance type potential transformer model that a kind of dynamic analog test is used, it is characterized in that: in breadboard analog output circuit, obtain the voltage signal of 100V/ by voltage transformer, the coupling circuit of forming through electric capacity, inductance, resistance is input to power amplifier, to the primary coil of output transformer, the voltage signal of this output transformer output has identical phase place and amplitude with the voltage signal that obtains at voltage transformer after power amplification;In the circuit of capacitance type potential transformer, voltage signal inserts the polyphone loop of electric capacity (C1) and inductance (L1) through input socket, after arriving the shunt circuit of electric capacity (C2) and inductance (L2) again, place in circuit element region circuit board carries out signal processing, signal after the processing carries out power amplification to accessory power outlet through power amplifier, exports through output transformer;Power transformer in the capacitance type potential transformer provides power supply for power amplifier, and the direct voltage of work is provided for power amplifier after the rectifier cell rectification of power transformer output voltage in circuit element district interior circuit board;The voltage signal of the 100V/ that voltage transformer obtains accessing to audio amplifier behind bleeder circuit;The rectification circuit of power transformer is packaged with two amplifiers as the working power of audio frequency amplifier in the integrated chip, only use one of them amplifier during work, and another is not worked; Amplifier is connected with the circuit of adjusting amplifier gain; The output signal of amplifier directly inserts the elementary of output transformer behind resistance, capacitor filtering loop filter, through the output transformer time satisfactory voltage signal of utmost point coupling output.
- 2, the capacitance type potential transformer model used of a kind of dynamic analog test according to claim 1, it is characterized in that: in the layout of capacitance type potential transformer, transformer, inductance element are away from the amplifier setting, and the magnetic line of force is mutually orthogonal to increase antijamming capability when inductance (L1) and inductance (L2), power transformer, output transformer installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620132039 CN200965824Y (en) | 2006-08-30 | 2006-08-30 | Capacitance type voltage mutual-inductor model for dynamic analog test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200620132039 CN200965824Y (en) | 2006-08-30 | 2006-08-30 | Capacitance type voltage mutual-inductor model for dynamic analog test |
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| CN200965824Y true CN200965824Y (en) | 2007-10-24 |
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| CN 200620132039 Expired - Lifetime CN200965824Y (en) | 2006-08-30 | 2006-08-30 | Capacitance type voltage mutual-inductor model for dynamic analog test |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419266B (en) * | 2008-12-01 | 2011-03-23 | 中国电力科学研究院 | Dynamic analog method for extra-high voltage transformer |
| CN102222135A (en) * | 2011-05-23 | 2011-10-19 | 清华大学 | Equivalent circuit model for current reflux path in single-ended inductor and modeling method thereof |
| CN105974354A (en) * | 2016-07-15 | 2016-09-28 | 国网四川省电力公司电力科学研究院 | Capacitive voltage transformer simulation model and simulation method |
| CN106443550A (en) * | 2016-09-26 | 2017-02-22 | 中国电力科学研究院 | Capacitive voltage transformer measuring circuit for laboratories |
| CN107017850A (en) * | 2016-01-28 | 2017-08-04 | 江苏省电力公司南京供电公司 | A kind of voltage power amplifying circuit |
| CN107024610A (en) * | 2017-03-27 | 2017-08-08 | 扬州新概念电气有限公司 | A kind of novel high-precision capacitive battery pressure sensor |
-
2006
- 2006-08-30 CN CN 200620132039 patent/CN200965824Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419266B (en) * | 2008-12-01 | 2011-03-23 | 中国电力科学研究院 | Dynamic analog method for extra-high voltage transformer |
| CN102222135A (en) * | 2011-05-23 | 2011-10-19 | 清华大学 | Equivalent circuit model for current reflux path in single-ended inductor and modeling method thereof |
| CN102222135B (en) * | 2011-05-23 | 2012-12-12 | 清华大学 | Equivalent circuit model for current reflux path in single-ended inductor and modeling method thereof |
| CN107017850A (en) * | 2016-01-28 | 2017-08-04 | 江苏省电力公司南京供电公司 | A kind of voltage power amplifying circuit |
| CN105974354A (en) * | 2016-07-15 | 2016-09-28 | 国网四川省电力公司电力科学研究院 | Capacitive voltage transformer simulation model and simulation method |
| CN105974354B (en) * | 2016-07-15 | 2018-07-17 | 国网四川省电力公司电力科学研究院 | A kind of capacitance type potential transformer simulation model and emulation mode |
| CN106443550A (en) * | 2016-09-26 | 2017-02-22 | 中国电力科学研究院 | Capacitive voltage transformer measuring circuit for laboratories |
| CN107024610A (en) * | 2017-03-27 | 2017-08-08 | 扬州新概念电气有限公司 | A kind of novel high-precision capacitive battery pressure sensor |
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Granted publication date: 20071024 |
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| EXPY | Termination of patent right or utility model |