CN105445630A - Turn-to-turn insulation testing device for dry type air reactor - Google Patents
Turn-to-turn insulation testing device for dry type air reactor Download PDFInfo
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- CN105445630A CN105445630A CN201510918296.XA CN201510918296A CN105445630A CN 105445630 A CN105445630 A CN 105445630A CN 201510918296 A CN201510918296 A CN 201510918296A CN 105445630 A CN105445630 A CN 105445630A
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- type air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- Testing Relating To Insulation (AREA)
Abstract
The invention provides a turn-to-turn insulation testing device for a dry type air reactor. The turn-to-turn insulation testing device for a dry type air reactor comprises an input module, a dry type air reactor, a monitoring circuit, an MCU system, a current foldback circuit, a bus module, a display module, a signal conversion switch, a digital-analog conversion circuit and an input operation module, wherein the monitoring circuit includes a voltage monitoring circuit, a reactive current monitoring circuit, an active current monitoring circuit and a power factor monitoring circuit; and the input module includes a voltage regulator, a high-voltage pulse circuit and a high-frequency oscillating circuit. The turn-to-turn insulation testing device for a dry type air reactor realizes accurate positioning for turn-to-turn insulation testing for the dry type air reactor, and is convenient for insulation monitoring inspection for the dry type air reactor during the operation process, and can further improve the operational reliability of the dry type air reactor and reduce the probability of occurrence of accidents.
Description
Technical field
The present invention relates to a kind of dry-type air-core reactor turn-to-turn insulation proving installation.
Background technology
Reactor is made up of multiple winding in parallel coaxially, and each winding in parallel is in parallel on electrically.Each winding in parallel needs coiling multilayer to form by many copper cash in parallel or aluminum steel according to design again, and every root wire is surrounded by mylar as turn-to-turn insulation.The glass fiber winding of winding outside in parallel epoxy resin-impregnated, tightly to encapsulate, and through hot setting, forms the encapsulating that has fine globality, by the separation of glass fiber pulling bar between each encapsulating, formation is dispelled the heat air flue.Adopt wiring arm as the outlet link of winding in parallel, the arm of wiring up and down of winding in parallel is fixed by drawing yarn mode, forms an entirety.
In recent years, dry reactor is subject to the welcome to countries in the world power department day by day because having the advantages such as voltage's distribiuting is even, the linearity is good, noise is low, loss is low, easy to maintenance.But in actual moving process, normal generation dry reactor burnout failure, causes very large economic loss.Practical operating experiences and the great mass of data of domestic and international dry reactor show: dry-type air-core reactor has 90% accident to be because of caused by inter-turn insulation defect.Therefore, dry reactor manufacturing sector and operation department all attach great importance to this problem, a kind of equipment that effectively can detect dry-type reactor interturn insulation fault of an urgent demand development.
The detection of inter-turn insulation defect of dry hollow reactor completes mainly through pulse oscillating voltage test.Circuit theory is: the turn-to-turn superpotential test of dry-type air-core reactor is by repeating discharge and recharge to electric capacity, and is applied on tested reactor winding by voltage by ball gap.Duration of test runs 1min, the initial spike of each electric discharge should be steady state value, and response frequency is the function of winding inductance and charging capacitor, for generally at 100kHz and following, should comprise and be not less than the superpotential that 3000 require amplitude.Compared with lightning impulse method, turn-to-turn superpotential test period is 1min, is continuously applied voltage and more effectively can finds inter-turn insulation defect; Meanwhile, multicycle exponential damping waveform makes oscillating frequency difference accumulate, the subtle change of easier identification reactance value.But complete thousands of discharge and recharges in the 1min time and also cause that to produce such turn-to-turn over-voltage waveform very difficult, when the common ball gap of employing of standard recommendation does discharge switch, ball gap single nature sparking voltage is stablized, air ionization ion meeting distortion electric field after electric discharge, during reignition, voltage breakdown can decline fast, and voltage breakdown amplitude is unstable.Thus, the once electric discharge that test often only starts most at 1min obtains the trial voltage value that standard specifies, later trial voltage significantly declines.
For being met the trial voltage waveform of standard-required, needing the hookup provided in improvement standard, producing the test unit that can meet standard-required.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of dry-type air-core reactor turn-to-turn insulation proving installation, described device comprises: load module, dry-type air-core reactor, observation circuit, MCU system, current foldback circuit, bus module, display module, signal switch, D/A switch circuit, input operation module;
Described load module connects the input port of dry-type air-core reactor, and described observation circuit comprises electric voltage observation circuit, reactive current observation circuit, active current observation circuit, power factor (PF) observation circuit;
Described load module comprises pressure regulator, high-voltage pulse circuit, high-frequency oscillating circuits, and described dry-type air-core reactor input end connects high-frequency oscillating circuits, described dry-type air-core reactor output terminal connects reactive current observation circuit, active current observation circuit, power factor (PF) observation circuit, the reactive current that described reactive current monitoring circuit monitors reactor exports, the active current that described active current monitoring circuit monitors reactor exports, the power factor (PF) of described power factor (PF) monitoring circuit monitors reactor, the output voltage of described electric voltage observation circuit monitoring reactor, described signal switch is used for timesharing conversion active current, reactive current, output voltage, power factor (PF) is to D/A switch switch, data after conversion are sent to MCU system and are used for treatment and analysis by D/A switch switch respectively, described MCU system sends steering order according to data processed result, thus control current foldback circuit action, and result is shown by display module,
Described bus module comprises CAN or RS232 bus, and the data for MCU system and modules or circuit are transmitted.
Described high-frequency oscillating circuits comprises adjustable transformer, protective resistance, ball discharge gap and charging capacitor.
Input operation module comprises man machine operation interface and action button, for manual operation instruction is inputed to MCU system.
Described display module comprises LCD display or LED display.
Due to technique scheme, the present invention has following beneficial effect: achieve the accurate location to the test of dry-type air-core reactor turn-to-turn insulation; In convenient operation, dry-type air-core reactor insulating monitoring is maked an inspection tour; The operational reliability of further raising dry-type air-core reactor, the probability that reduction accident occurs.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is dry-type air-core reactor turn-to-turn insulation proving installation structured flowchart.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
Embodiment:
See Fig. 1, a kind of dry-type air-core reactor turn-to-turn insulation proving installation, it is characterized in that, described device comprises: load module, dry-type air-core reactor, observation circuit, MCU system, current foldback circuit, bus module, display module, described load module comprises pressure regulator, high-voltage pulse circuit, high-frequency oscillating circuits, and described dry-type air-core reactor input end connects high-frequency oscillating circuits, described dry-type air-core reactor output terminal connects reactive current observation circuit, active current observation circuit, power factor (PF) observation circuit, the reactive current that described reactive current monitoring circuit monitors reactor exports, the active current that described active current monitoring circuit monitors reactor exports, the power factor (PF) of described power factor (PF) monitoring circuit monitors reactor, the output voltage of described electric voltage observation circuit monitoring reactor, described signal switch is used for timesharing conversion active current, reactive current, output voltage, power factor (PF) is to D/A switch switch, data after conversion are sent to MCU system and are used for treatment and analysis by D/A switch switch respectively, described MCU system sends steering order according to data processed result, thus control current foldback circuit action, and result is shown by display module.Described load module comprises pressure regulator and high-voltage pulse circuit, and high-frequency oscillating circuits comprises electric capacity and inductance.
Described load module comprises pressure regulator and high-voltage pulse circuit, and high-frequency oscillating circuits comprises electric capacity and inductance.
Described input operation module comprises man machine operation interface and action button, for manual operation instruction is inputed to MCU system.
Described bus module comprises CAN or RS232 bus, and the data for MCU system and modules or circuit are transmitted.
D/A switch data acquisition system (DAS) adopt multichannel sample simultaneously timesharing conversion mode, the output voltage sampled, reactive current, active current, power factor (PF) are added in the input end of analog switch MC1405Bl simultaneously, the timesharing of analog switch is selected signal to give AD574 and is realized analog to digital conversion, MC1405Bl is with numerically controlled two-way list 8 tunnels analogy switch, selects control end A, B to be controlled to select by PI.7, PI.6 of AT89C51.
In addition, the pressure regulator of the load module of described insulated test device is used for regulating the high voltage direct current inputing to reactor, and the high-voltage pulse circuit of described load module, this high-voltage pulse circuit comprises high pressure IGBT switch and pwm pulse signal generative circuit.
Described high-frequency oscillating circuits comprises the circuit of an adjustable transformer, protective resistance, ball discharge gap and charging capacitor composition, thus high-frequency impulse oscillating voltage and power-frequency voltage can be superimposed upon on dry-type air-core reactor to be measured simultaneously.
Present invention achieves the accurate location to the test of dry-type air-core reactor turn-to-turn insulation; In convenient operation, dry-type air-core reactor insulating monitoring is maked an inspection tour; The operational reliability of further raising dry-type air-core reactor, the probability that reduction accident occurs.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (4)
1. a dry-type air-core reactor turn-to-turn insulation proving installation, is characterized in that, described device comprises:
Load module, dry-type air-core reactor, observation circuit, MCU system, current foldback circuit, bus module, display module, signal switch, D/A switch circuit, input operation module;
Described load module connects the input port of dry-type air-core reactor, and described observation circuit comprises electric voltage observation circuit, reactive current observation circuit, active current observation circuit, power factor (PF) observation circuit;
Described load module comprises pressure regulator, high-voltage pulse circuit, high-frequency oscillating circuits, and described dry-type air-core reactor input end connects high-frequency oscillating circuits, described dry-type air-core reactor output terminal connects reactive current observation circuit, active current observation circuit, power factor (PF) observation circuit, the reactive current that described reactive current monitoring circuit monitors reactor exports, the active current that described active current monitoring circuit monitors reactor exports, the power factor (PF) of described power factor (PF) monitoring circuit monitors reactor, the output voltage of described electric voltage observation circuit monitoring reactor, described signal switch is used for timesharing conversion active current, reactive current, output voltage, power factor (PF) is to D/A switch switch, data after conversion are sent to MCU system and are used for treatment and analysis by D/A switch switch respectively, described MCU system sends steering order according to data processed result, thus control current foldback circuit action, and result is shown by display module,
Described bus module comprises CAN or RS232 bus, and the data for MCU system and modules or circuit are transmitted.
2. dry-type air-core reactor turn-to-turn insulation proving installation according to claim 1, is characterized in that, described high-frequency oscillating circuits comprises adjustable transformer, protective resistance, ball discharge gap and charging capacitor.
3. dry-type air-core reactor turn-to-turn insulation proving installation according to claim 1, it is characterized in that, input operation module comprises man machine operation interface and action button, for manual operation instruction is inputed to MCU system.
4. dry-type air-core reactor turn-to-turn insulation proving installation according to claim 1, it is characterized in that, described display module comprises LCD display or LED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510918296.XA CN105445630A (en) | 2015-12-11 | 2015-12-11 | Turn-to-turn insulation testing device for dry type air reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510918296.XA CN105445630A (en) | 2015-12-11 | 2015-12-11 | Turn-to-turn insulation testing device for dry type air reactor |
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| CN105445630A true CN105445630A (en) | 2016-03-30 |
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| CN201510918296.XA Pending CN105445630A (en) | 2015-12-11 | 2015-12-11 | Turn-to-turn insulation testing device for dry type air reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646155A (en) * | 2016-11-24 | 2017-05-10 | 云南电网有限责任公司电力科学研究院 | Small-capacity 35kV dry type hollow parallel reactor interturn voltage-withstand test circuit |
| CN108761297A (en) * | 2018-08-28 | 2018-11-06 | 重庆理工大学 | A kind of dry-type air-core reactor partial discharges fault on-line computing model based on high-frequency signal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1539904A (en) * | 1975-07-18 | 1979-02-07 | Bosch Gmbh Robert | Method and apparatus for testing electrical capacitors |
| EP0012721B1 (en) * | 1978-12-08 | 1982-08-04 | Forschungskommission des SEV und VSE für Hochspannungsfragen (FKH) | High tension testing installation |
| CN203519681U (en) * | 2013-11-01 | 2014-04-02 | 哈尔滨理工大学 | Pulse oscillation test apparatus for interturn insulation detection of dry-type air-core reactor |
| CN104515941A (en) * | 2014-12-24 | 2015-04-15 | 国家电网公司 | Electric reactor turn-insulating detection device based on pulse oscillation principle |
| CN204832429U (en) * | 2015-08-06 | 2015-12-02 | 云南电网有限责任公司文山供电局 | Dry -type air -core reactor interturn insulation detection device based on pulsed oscillation principle |
-
2015
- 2015-12-11 CN CN201510918296.XA patent/CN105445630A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1539904A (en) * | 1975-07-18 | 1979-02-07 | Bosch Gmbh Robert | Method and apparatus for testing electrical capacitors |
| EP0012721B1 (en) * | 1978-12-08 | 1982-08-04 | Forschungskommission des SEV und VSE für Hochspannungsfragen (FKH) | High tension testing installation |
| CN203519681U (en) * | 2013-11-01 | 2014-04-02 | 哈尔滨理工大学 | Pulse oscillation test apparatus for interturn insulation detection of dry-type air-core reactor |
| CN104515941A (en) * | 2014-12-24 | 2015-04-15 | 国家电网公司 | Electric reactor turn-insulating detection device based on pulse oscillation principle |
| CN204832429U (en) * | 2015-08-06 | 2015-12-02 | 云南电网有限责任公司文山供电局 | Dry -type air -core reactor interturn insulation detection device based on pulsed oscillation principle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646155A (en) * | 2016-11-24 | 2017-05-10 | 云南电网有限责任公司电力科学研究院 | Small-capacity 35kV dry type hollow parallel reactor interturn voltage-withstand test circuit |
| CN108761297A (en) * | 2018-08-28 | 2018-11-06 | 重庆理工大学 | A kind of dry-type air-core reactor partial discharges fault on-line computing model based on high-frequency signal |
| CN108761297B (en) * | 2018-08-28 | 2024-05-10 | 重庆理工大学 | Dry-type air-core reactor partial discharge fault on-line monitoring appearance based on high frequency signal |
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Application publication date: 20160330 |