CN101458307A - Synchronization controller for introducing electric voltage in high-voltage circuit-breaker synthesizing test - Google Patents
Synchronization controller for introducing electric voltage in high-voltage circuit-breaker synthesizing test Download PDFInfo
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- CN101458307A CN101458307A CNA2008102364933A CN200810236493A CN101458307A CN 101458307 A CN101458307 A CN 101458307A CN A2008102364933 A CNA2008102364933 A CN A2008102364933A CN 200810236493 A CN200810236493 A CN 200810236493A CN 101458307 A CN101458307 A CN 101458307A
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Abstract
The invention relates to the high-voltage circuitbreaker test experiment field, in particular to a synchronization control device for introducing voltage in a high-voltage circuitbreaker synthetic test. The device is applicable to the trigger process control of large-capacity test circuits of 800/1,000 KV UHV circuitbreakers. The device comprises a voltage divider, a voltage follower, an absolute value amplifier and a voltage comparator which are connected with each other sequentially; the voltage divider collects the transient voltage from the prior introduced voltage source; the transient voltage, after being isolated by the voltage follower, enters the absolute value amplifier to be amplified, and then a positive polarity transient voltage is output; the positive polarity transient voltage signal is input to the voltage comparator, after comparing the positive polarity transient voltage with the reference voltage set by the voltage comparator, the voltage comparator outputs trigger signals from the latter voltage source.
Description
Technical field
The present invention relates to primary cut-out testing experiment field, voltage is introduced and is used sync control device in particularly a kind of primary cut-out synthetic test, is applicable to the trigger process control of the super breaker in extra high voltage high capacity of 800/1000KV test loop.
Background technology
The test of high-voltage AC breaker mainly contains two kinds of test methods: straightway testing and synthetic test.Straightway testing refers to the test that applied voltage, electric current and transient state and power frequency recovery voltage obtain by a single supply loop; Synthetic test refers to that whole electric currents or most of electric current obtain from a current source (power current loop), and all or part of test that obtains from another or a plurality of independently voltage source (voltage circuit) of applied voltage or recovery voltage (transient state with power frequency).For straightway testing, the input of voltage and current is life period problem at interval not, can be good at realizing equivalence with this understanding.But the power supply capacity that can satisfy straightway testing is limited, when the electric pressure raising of tested isolating switch, when capacity increases, just needs to adopt synthetic test loop.
Synthetic test generally introduces the loop by an electric current and a voltage introducing loop is formed, and turn-off current and recovery voltage are provided respectively by two power supplys, and wherein, the current source that electric current is introduced the loop provides the electric current of stream through tested isolating switch; The voltage source that voltage is introduced the loop inserts the test loop behind current zero.But for synthetic test, when being made up of an electric current introducing loop and a plurality of voltage introducing loop, just there is the matching problem of the making time of current source and first voltage source and first voltage source and second voltage source in this.How to make accurate input between a plurality of voltage sources, make synthetic test can with the straightway testing equivalence, just become one of key issue of synthetic test.
Summary of the invention
The object of the present invention is to provide in a kind of primary cut-out synthetic test voltage to introduce and use sync control device, it can realize the accurate input between a plurality of voltage sources, make synthetic test can with straightway testing effect equivalence.
In order to achieve the above object, the present invention is achieved by the following technical solutions: voltage is introduced and is used sync control device in a kind of primary cut-out synthetic test, it is characterized in that, comprising: the voltage divider of Lian Jieing, voltage follower, absolute value amplifier, voltage comparator successively; Described voltage divider is gathered the instantaneous voltage of last introducing voltage source, after follower is isolated, entering absolute value amplifier amplifies and the output cathode instantaneous voltage, described positive polarity instantaneous voltage signal input voltage comparer, after the reference voltage that voltage comparator is set is compared, the trigger pip of output back one voltage source.
Further improvement of the present invention is:
(1) is connected with time-delay network after the described voltage comparator, is used for the described trigger pulse of time delay; It further improves and is, is connected with exclusive circuit between described voltage comparator and the time-delay network, the trigger pip of selectivity output back one voltage source.
(2) described voltage divider adopts RC divider; Its further characteristics be that the frequency span of described RC divider is 1M H
Z
The invention solves the accurate input problem of the voltage source in multivoltage loop in the combiner circuit.Can follow the tracks of the output voltage of gathering last voltage source by the voltage divider of high frequency band, amplify through follower isolation, absolute value amplifier, after the reference voltage that voltage comparator is set is compared, the trigger pulse of output back one voltage source.The making time of reference voltage decision back one voltage source that voltage comparator is set, i.e. voltage waveform superposed positions.When the voltage waveform superposed positions of back one voltage source during, can realize by time delay network on the crest of the voltage waveform of last voltage source or trough right side.Also increase exclusive circuit among the present invention, can selectivity export trigger pulse, strengthened the controllability of device.
Description of drawings
Fig. 1 is three loop compounding testing circuit schematic diagrams;
Fig. 2 is three loop synthetic test current-voltage waveform composite diagrams;
Fig. 3 is a voltage introducing sync control device circuit diagram in a kind of primary cut-out synthetic test;
Fig. 4 is the RC divider schematic diagram.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, be three loop compounding testing circuit, comprising a current source and first, second two voltage sources.The voltage of first voltage source is introduced and is adopted electric current to introduce principle, guarantees the equivalence of interaction stage, and it only provides a part of recovery voltage; The voltage of second voltage source is introduced and is adopted voltage to introduce principle, and required recovery voltage of dielectric load stage is provided.
Current source mainly is made up of surge generator G and transformer, and test isolating switch TB is provided required short-circuit current load, and the output terminal of current source is parallel with: current source protection ball BQ is used for when the first auxiliary circuit breaker AB1 is turn-off current the protective current source; The current source FM circuit, this circuit is made up of the resistance R O1 and the capacitor C O1 of series connection, and its effect is to reduce current source recovery voltage escalating rate, is beneficial to the disconnection of the first auxiliary circuit breaker AB1; Test the arc circuit that prolongs of isolating switch TB, this prolongs arc circuit prolonging arc switch ZK, prolong arc discharge clearance D Qy, prolong arc resistance Ry, prolong arc capacitor C y and form by series connection successively, its effect is that test isolating switch TB is disconnected at prospective current zero point, reaches the pre-tuning arc time.
First voltage source is formed its output terminal by the first inductance L s1, the first discharging gap DQ1 and the first storage capacitor Cs1 of series connection successively: be parallel with first FM circuit, this first FM circuit is in series by first resistance R 1 and first capacitor C 1; Be parallel with the first time delay capacitor C d1, its effect provides the time delay of standard code; Be parallel with test isolating switch TB.
Second voltage source mainly is made up of the second inductance L s2, the second discharging gap DQ2 and the second storage capacitor Cs2 of series connection successively, in the present embodiment, between the common node of the second inductance L s2 and the second discharging gap DQ2 and the second voltage source low pressure end, be electrically connected with auxiliary induction Ls0.Second voltage output terminal: be parallel with second FM circuit, this second FM circuit is in series by second resistance R 2 and second capacitor C 2; Be parallel with the second time delay capacitor C d2; Be parallel with the second auxiliary circuit breaker AB2.
In the present embodiment, also have: three voltage transformer (VT) V1, V2, V3 are separately positioned on first voltage output terminal, second voltage output terminal and current source output terminal; Three magnetic potentiometer I1, I2, I3 are separately positioned on the leading-out terminal of second auxiliary circuit breaker, the low pressure end of second voltage source and the low pressure end of first voltage source; Its role is to the required electric current of experiment with measuring, voltage data.
With reference to Fig. 2, before the zero point of last current waveform that the test product isolating switch cut-offs, about 1000 μ s, make the first discharging gap DQ1 action of first voltage source.During through zero crossing, auxiliary circuit breaker AB1 cut-offs, and only has the electric current of first voltage source to flow through isolating switch TB at the electric current of current source, and isolating switch TB disconnects when the current zero of first voltage source.The transient state and the power frequency recovery voltage that form by Cs2-Ls2-C1-R1, i.e. u
1Be added in isolating switch TB two ends immediately.Simultaneously, this voltage is as the sync control device input signal of second voltage source voltage introducing.When this transient recovery voltage was near peaking, sync control device sent synchronous triggering signal and makes second discharging gap DQ2 action, and Cs2 to R2, C2 and Cd oscillating discharge, forms transient state and power frequency recovery voltage u by Ls2
2, u
1And u
2Voltage stack after, be added to isolating switch TB two ends, thus guarantee synthetic test can with the equivalence of straightway testing.
With reference to Fig. 3; voltage is introduced and use sync control device in the primary cut-out synthetic test, comprising: successively the voltage divider 1 of Lian Jieing, input protection circuit 2, voltage follower 3, absolute value amplifier 4, voltage comparator 5, exclusive circuit 6, time-delay network 7, export auxiliary circuit 8.Voltage divider 1 is gathered the instantaneous voltage of last introducing voltage source; after input protection circuit 2 and follower 3 isolation; enter absolute value amplifier 4 and amplify back output cathode instantaneous voltage signal; positive polarity instantaneous voltage signal input voltage comparer 5; after the reference voltage that voltage comparator 5 is set is compared, the trigger pip of output back one voltage source.In other stages of synthetic test, can block the output of the trigger pip of back one voltage source by exclusive circuit 6.The current/voltage synthetic waveform of synthetic test generally is to obtain in advance through simulation calculation, and during synthetic test, the reference voltage that voltage comparator is set is decided by above-mentioned current/voltage synthetic waveform.Present embodiment is disposed with time-delay network 7, output auxiliary circuit 8 after exclusive circuit 6; Time-delay network 7 is mainly sent opportunity for the trigger pip of adjusting back one voltage source more accurately, meets the requirement of current/voltage synthetic waveform better; Output auxiliary circuit 8 is mainly in order to realize afterwards the output isolation features and the hard closing function of the trigger pip of a voltage source.
In the present embodiment, voltage is introduced and is achieved as follows with the sync control device physical circuit in the primary cut-out synthetic test:
The output terminal of LF356 follower amplifier divides three the tunnel to enter absolute value amplifier 4: the first via is directly imported the negative input of a LM6361N amplifier, its electrode input end ground connection; The second the tunnel successively by one group of 47K resistance and 4.7K resistance of connecting, import the negative input of the 2nd LM6361N amplifier, the 47K resistance of this group series connection and the common node of 4.7K resistance, be connected with ground by one 470 Europe resistance on the one hand, be connected the output terminal of current direction the one LM6361N amplifier of this diode with the output terminal of a LM6361N amplifier by a diode on the other hand; 47K resistance, 4.7K resistance that Third Road is connected by another group successively, import the anodal utmost point input end of the 2nd LM6361N amplifier, the 47K resistance of this group series connection and the common node of 4.7K resistance, be connected with ground by another 470 Europe resistance on the one hand, be connected with the output terminal of a LM6361N amplifier by another diode on the other hand, the electric current of this diode flows out the output terminal of a LM6361N amplifier; The electrode input end of the 2nd LM6361N amplifier is through the parallel circuit ground connection of 5.6K resistance and 30p electric capacity composition; The parallel circuit that the negative input of the 2nd LM6361N amplifier is formed through another 5.6K resistance and 30p electric capacity is connected with its output terminal, and this output terminal is by a 10K resistance eutral grounding.
The output terminal of the 2nd LM6361N amplifier connects the negative input of voltage comparator 5, and the reference voltage of the setting of its electrode input end is realized by the dividing potential drop of a 5V power supply and a 10K adjustable resistance.4011 Sheffer stroke gate integrated circuit of the output terminal input exclusive circuit 6 of voltage comparator 5, another input end is as control end, and its output terminal connects time-delay network 7.Time-delay network 7 utilizes capacitance-resistance charging time-delay principle to design, and present embodiment is three grades of charging networkings, realizes the selection of time delay length by switch.The output terminal of time-delay network 7 is connected with the input end of output auxiliary circuit 8, and this input end is by the emitter-base bandgap grading end output trigger pulse of BC147 amplifier, and this emitter-base bandgap grading end is in series with LED and 200 Europe resistance over the ground, is used for the output indication of trigger pulse; The input end of output auxiliary circuit 8 also is provided with manual ground connection button, is used for the output of hard closing trigger pulse.
With reference to Fig. 4, the voltage divider 1 of present embodiment adopts the TBF550-400/500 RC divider, its nominal parameter:
A. power-frequency voltage: 550kV effective value;
B. DC voltage: 700kV mean value;
C. operating impulse voltage (250/2500nS): 1175kV peak value;
The high-voltage arm of RC divider is made up of first resistance R 1, the 3rd resistance R 3 and first capacitor C 1; First resistance R 1 and first capacitor C 1 are formed series circuit, this series circuit and 3 parallel connections of the 3rd resistance R.Low-voltage arm is made up of second resistance R 2, the 4th resistance R 4 and second capacitor C 2; Second resistance R 2 and second capacitor C 2 are formed series circuit, this series circuit and 4 parallel connections of the 4th resistance R.Behind the low-voltage arm output terminal serial connection build-out resistor R5 of RC divider, by concentric cable output voltage measuring-signal.Adopt the RC divider measurement voltage signal, its frequency span is 1M H
Z, precision is the microsecond level.
Under the equal conditions, adopt the input moment of the output voltage loop unlocking signal control second source of common programmed controller, its voltage unblanks to be output as a millisecond utmost point; And adopting voltage introducing sync control device in the primary cut-out synthetic test of the present invention, the input of second source precision constantly is the microsecond level.Therefore, primary cut-out synthetic test precision height, test is accurately.
Claims (5)
1, voltage is introduced and to be used sync control device in a kind of primary cut-out synthetic test, it is characterized in that, comprising: the voltage divider of Lian Jieing, voltage follower, absolute value amplifier, voltage comparator successively; Described voltage divider is gathered the instantaneous voltage of last introducing voltage source, after follower is isolated, entering absolute value amplifier amplifies and the output cathode instantaneous voltage, described positive polarity instantaneous voltage signal input voltage comparer, after the reference voltage that voltage comparator is set is compared, the trigger pip of output back one voltage source.
2, voltage is introduced and is used sync control device in a kind of primary cut-out synthetic test according to claim 1, it is characterized in that, is connected with time-delay network after the described voltage comparator, is used for the described trigger pulse of time delay.
3, voltage is introduced and is used sync control device in a kind of primary cut-out synthetic test according to claim 2, it is characterized in that, is connected with exclusive circuit between described voltage comparator and the time-delay network, the trigger pip of selectivity output back one voltage source.
4, voltage is introduced and is used sync control device in a kind of primary cut-out synthetic test according to claim 1, it is characterized in that, described voltage divider adopts RC divider.
5, voltage is introduced and is used sync control device in a kind of primary cut-out synthetic test according to claim 1, it is characterized in that the frequency span of described RC divider is 1M H
Z
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| CN2008102364933A CN101458307B (en) | 2008-12-26 | 2008-12-26 | Synchronization controller for introducing electric voltage in high-voltage circuit-breaker synthesizing test |
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| CN101458307B CN101458307B (en) | 2011-05-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592600A (en) * | 2013-11-12 | 2014-02-19 | 北京航空航天大学 | Synthetic loop test synchronous control system suitable for high-voltage breaker |
| CN103676658A (en) * | 2013-11-30 | 2014-03-26 | 中国西电电气股份有限公司 | System and method for synchronous control of synthetic test of high-voltage electrical apparatuses |
| CN113589027A (en) * | 2021-07-30 | 2021-11-02 | 奇舍电子科技(上海)有限公司 | Transient process time information detection device for power electronic device |
| CN114325360A (en) * | 2020-10-10 | 2022-04-12 | 西安高压电器研究院股份有限公司 | Short circuit on-off test method and system for high-voltage alternating current circuit breaker |
-
2008
- 2008-12-26 CN CN2008102364933A patent/CN101458307B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592600A (en) * | 2013-11-12 | 2014-02-19 | 北京航空航天大学 | Synthetic loop test synchronous control system suitable for high-voltage breaker |
| CN103592600B (en) * | 2013-11-12 | 2016-06-01 | 北京航空航天大学 | A kind of synthesis loop test synchronous control system being applicable to primary cut-out |
| CN103676658A (en) * | 2013-11-30 | 2014-03-26 | 中国西电电气股份有限公司 | System and method for synchronous control of synthetic test of high-voltage electrical apparatuses |
| CN103676658B (en) * | 2013-11-30 | 2016-04-06 | 中国西电电气股份有限公司 | The synchronous control system of High-Voltage Electrical Appliances synthetic test and synchronisation control means thereof |
| CN114325360A (en) * | 2020-10-10 | 2022-04-12 | 西安高压电器研究院股份有限公司 | Short circuit on-off test method and system for high-voltage alternating current circuit breaker |
| CN113589027A (en) * | 2021-07-30 | 2021-11-02 | 奇舍电子科技(上海)有限公司 | Transient process time information detection device for power electronic device |
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Assignee: Xi'an High Voltage Apparatus Research Institute Co., Ltd Assignor: China XD Electronic Corporation Contract record no.: 2012610000081 Denomination of invention: Synchronization controller for introducing electric voltage in high-voltage circuit-breaker synthesizing test Granted publication date: 20110504 License type: Exclusive License Open date: 20090617 Record date: 20120530 |
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Effective date of registration: 20210818 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: CHINA XD ELECTRIC Co.,Ltd. |
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Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |