CN205120901U - GIS is with frequency homophase ac voltage withstand test testing system - Google Patents
GIS is with frequency homophase ac voltage withstand test testing system Download PDFInfo
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- CN205120901U CN205120901U CN201520898114.2U CN201520898114U CN205120901U CN 205120901 U CN205120901 U CN 205120901U CN 201520898114 U CN201520898114 U CN 201520898114U CN 205120901 U CN205120901 U CN 205120901U
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
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- 238000001914 filtration Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
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Abstract
The utility model relates to a GIS is with frequency homophase ac voltage withstand test testing system, its structure does, and excitation change, reactor, current -limiting resistor and capacitive voltage divider connect gradually and constitute the series resonance return circuit, and the series resonance return circuit links to each other with frequency transforming cabinet, the input of the output connection control case of series resonance return circuit and sampler, the output connection frequency transforming cabinet of control box, the voltage transformer low tension side on the operation generating line is connected to the input of sampler. The utility model discloses put up the ac voltage withstand test testing system of GIS equipment under adjacent not power failure of the generating line circumstances, made and carry out the experimental enable of GIS equipment ac voltage withstand test under adjacent not power failure of the generating line circumstances, carried out the very big convenience that provides for the withstand voltage test of system after enlargement, maintenance. Be suitable for and be widely used and promote at electric power system.
Description
Technical field
The utility model relates to the technical field of electric system, especially relates to a kind of same frequency homophase AC voltage withstand test system being applicable to GIS.
Background technology
The GIS transformer station of double bus scheme, after interval enlarging or maintenance, for meeting site test condition, and avoid bus isolating switch fracture that trial voltage superposition bus inverted running phase voltage does not occur puncture and jeopardize the situation of operational outfit, the bus of this electric pressure must all have a power failure, this makes a big impact to the mutual reliable power supply of indifferent electrical network of being with, having a power failure, it is extremely difficult to coordinate, especially to power supply reliability, some requires that extra high user cannot have a power failure at all, causes withstand voltage test to be difficult to.
Utility model content
In order to overcome weak point of the prior art, the utility model provides a kind of GIS with frequency homophase AC voltage withstand test system, can carry out the problem of withstand voltage test just solve in prior art to need to have a power failure.
The utility model solves the technical scheme that its technical matters adopts:
GIS is with frequency homophase AC voltage withstand test system, excitation change, reactor, current-limiting resistance and capacitive divider connect and compose series resonant tank successively, series resonant tank is connected with frequency conversion tank, the input end of the output terminal connection control case of series resonant tank and sampler, the output terminal of control box connects frequency conversion tank; The input end of sampler connects the voltage transformer (VT) low-pressure side run on bus.
Described control box comprises protecting control module and phase-locked loop module.
Described protecting control module comprises main control chip, is connected after impedance matching module, signal filtering module, amplification module connect successively with main control chip input end; The input end connection signal filtration module of phase differential processing module, the output terminal of phase differential processing module connects main control chip; The output terminal connecting fluid crystal display screen of main control chip and fault output module.
The output terminal of described control box is respectively by variable-frequency power sources communication optical fiber with together frequently with phase control Fiber connection frequency conversion tank.
Described operation bus installs disconnector.
Advantage of the present utility model and beneficial effect are:
Build the AC voltage withstand test system of GIS device under adjacent bus not power-off condition, make to carry out GIS device AC voltage withstand test under adjacent bus not power-off condition and become possibility, for the great convenience that provides is carried out in the withstand voltage test of system after enlarging, maintenance.Be suitable for widely using in electric system and promoting.
Accompanying drawing explanation
Fig. 1 is with frequency homophase withstand voltage test system wiring schematic diagram;
Fig. 2 is protection module cardinal principle block diagram in control box.
In figure: frequency conversion tank 1, excitation becomes 2, reactor 3, current-limiting resistance 4, capacitive divider 5, disconnector 6, runs bus 7, sampler 8, variable-frequency power sources communication optical fiber 9, with frequently with phase control optical fiber 10, and protecting control module 11, control box 12, phase-locked loop module 13.
Embodiment
Embodiment
As shown in Figure 1-2, GIS is with frequency homophase AC voltage withstand test system, excitation change 2, reactor 3, current-limiting resistance 4 connect and compose series resonant tank successively with capacitive divider 5, series resonant tank is connected with frequency conversion tank 1, the input end of the output terminal connection control case 12 of series resonant tank and sampler 8, the output terminal of control box 12 is connected frequency conversion tank 1 with frequency with phase control optical fiber 1 respectively by variable-frequency power sources communication optical fiber 9; The input end of sampler 8 connects the voltage transformer (VT) low-pressure side run on bus 7.
Described control box 12 comprises protecting control module 11 and phase-locked loop module 13; Described protecting control module comprises main control chip, is connected after impedance matching module, signal filtering module, amplification module connect successively with main control chip input end; The input end connection signal filtration module of phase differential processing module, the output terminal of phase differential processing module connects main control chip; The output terminal connecting fluid crystal display screen of main control chip and fault output module.
Described frequency conversion tank is high-power frequency conversion cabinet.
The utility model mainly provides a kind of GIS with frequency homophase AC voltage withstand test system, and wherein, disconnector 6 remains open in process of the test, in order to isolate adjacent charging equipment; Connect sampler in voltage transformer (VT) low-pressure side, in order to gather the voltage signal frequency phase place run on bus 7, and transfer to control box 12; Control box 12 forms primarily of protecting control module 11 and phase-locked loop module 13; wherein protecting control module 11 act as when the frequency generation deviation of bus reference voltage signal and trial voltage signal, phase place be subjected to displacement, voltage fluctuation more than 10%, the situation such as trial voltage waveform generation Severe distortion time; automatic startup, with the defencive function of homophase failure frequently, is automatically cut off field power supply and is exported.Phase-locked loop module 13 act as the frequency of reference voltage signal control loop internal oscillation signal and phase place that utilize input, realize output signal frequency to frequency input signal from motion tracking, thus reach phase-locked object.Control box 12 again by variable-frequency power sources communication optical fiber 9 and with frequently transferring signals in high-power frequency conversion cabinet 1 with phase control optical fiber 10, then regulates the series resonance state of test by reactance, thus completes the withstand voltage test to GIS device.
The utility model forms series resonant tank by excitation change, REgulatable reactor, protective resistance and tested device equivalent capacity; there is provided with frequently homophase power supply and working voltage with the orientation test voltage of homophase frequently, adopt high-speed oscilloscope and monitoring and protecting device to carry out with homophase monitoring frequently in process of the test.Wherein with frequency homophase power acquisition PHASE-LOCKED LOOP PLL TECHNIQUE, export the voltage model consistent with reference voltage frequency plot.
Above about specific descriptions of the present utility model, be only not limited to the technical scheme described by the utility model embodiment for illustration of the utility model.Those of ordinary skill in the art should be appreciated that and still can modify to the utility model or equivalent replacement, to reach identical technique effect.Needs are used, all in protection domain of the present utility model as long as meet.
Claims (5)
1. a GIS is with frequency homophase AC voltage withstand test system, it is characterized in that excitation change, reactor, current-limiting resistance and capacitive divider connect and compose series resonant tank successively, series resonant tank is connected with frequency conversion tank, the input end of the output terminal connection control case of series resonant tank and sampler, the output terminal of control box connects frequency conversion tank; The input end of sampler connects the voltage transformer (VT) low-pressure side run on bus.
2. a kind of GIS according to claim 1 is with frequency homophase AC voltage withstand test system, it is characterized in that described control box comprises protecting control module and phase-locked loop module.
3. a kind of GIS according to claim 2 is with frequency homophase AC voltage withstand test system, it is characterized in that described protecting control module comprises main control chip, be connected with main control chip input end after impedance matching module, signal filtering module, amplification module connect successively; The input end connection signal filtration module of phase differential processing module, the output terminal of phase differential processing module connects main control chip; The output terminal connecting fluid crystal display screen of main control chip and fault output module.
4. a kind of GIS according to claim 1 frequency homophase AC voltage withstand test system together, is characterized in that the output terminal of described control box is respectively by variable-frequency power sources communication optical fiber with together frequently with phase control Fiber connection frequency conversion tank.
5. a kind of GIS according to claim 1 is with frequency homophase AC voltage withstand test system, it is characterized in that described operation bus installs disconnector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898114.2U CN205120901U (en) | 2015-11-12 | 2015-11-12 | GIS is with frequency homophase ac voltage withstand test testing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898114.2U CN205120901U (en) | 2015-11-12 | 2015-11-12 | GIS is with frequency homophase ac voltage withstand test testing system |
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| CN205120901U true CN205120901U (en) | 2016-03-30 |
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| CN201520898114.2U Active CN205120901U (en) | 2015-11-12 | 2015-11-12 | GIS is with frequency homophase ac voltage withstand test testing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425120A (en) * | 2015-11-12 | 2016-03-23 | 国网辽宁省电力有限公司盘锦供电公司 | GIS same frequency and phase AC voltage withstand test system |
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2015
- 2015-11-12 CN CN201520898114.2U patent/CN205120901U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425120A (en) * | 2015-11-12 | 2016-03-23 | 国网辽宁省电力有限公司盘锦供电公司 | GIS same frequency and phase AC voltage withstand test system |
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