CN201138369Y - Series resonance pressure test apparatus of low interference - Google Patents
Series resonance pressure test apparatus of low interference Download PDFInfo
- Publication number
- CN201138369Y CN201138369Y CNU2008200003442U CN200820000344U CN201138369Y CN 201138369 Y CN201138369 Y CN 201138369Y CN U2008200003442 U CNU2008200003442 U CN U2008200003442U CN 200820000344 U CN200820000344 U CN 200820000344U CN 201138369 Y CN201138369 Y CN 201138369Y
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- inductance
- series resonance
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Abstract
The utility model discloses a low-interference series resonance voltage withstand test device applied in the field of high-voltage test; an input power supply is connected with an input filtering and isolating circuit; the input filtering and isolating circuit is connected with a frequency modulating power supply; the frequency modulating power supply is connected with an output filtering circuit; the output filtering circuit is connected with a series resonance circuit; the series resonance circuit is connected with a measuring control circuit; the signal of the measuring control circuit is connected with the frequency modulating power supply. The device leads to low-interference no-partial discharge of the whole series resonance circuit with the input filtering and isolating circuit and the output filtering circuit; the test device is not restricted by the frequency modulating power supply, and realizes the requirement of the low-interference without partial discharge for the voltage withstand test of super high voltage electrical equipments.
Description
Technical field
The utility model relates to the device in high-voltage test field, specifically is a kind of series resonance Withstand test device of low interference.
Background technology
Along with China's line voltage grade has reached 750KV, in the high-voltage test field, urgently need to solve the low interference ac voltage withstanding and the induced over voltage withstand test of extra-high pressures such as cross-inked polyethylene power cable (XLPE), gas insulated combined electrical equipment (GIS), Generator Set, large-scale power transformer, mutual inductor, jumbo electrical equipment.Traditional testing transformer or inductance-regulation resonance power supply all are not suitable for on-the-spot the use because weight is too big, use is inconvenient, automaticity is not high.The frequency conversion resonance vibration system itself is exactly powerful interference source, and office puts certain difficulty is arranged in the measurement at the scene, makes its range of application be restricted.
The utility model content
The purpose of this utility model is for providing a kind of restriction that is not subjected to variable frequency power source, realized the series resonance Withstand test device of the low interference of the low interference ac voltage withstanding of high voltage, jumbo electrical equipment and induced over voltage withstand test.
The technical scheme that realizes the foregoing invention purpose is as follows:
A kind of series resonance Withstand test device of low interference, by input filtering isolated loop, variable frequency power source, the output filter circuit, series resonant tank, the measurement control loop is formed, measure the signal of control loop and receive variable frequency power source, the input power supply is received input filtering isolated loop, input filtering isolated loop is received variable frequency power source, and variable frequency power source is received the output filter circuit, and the output filter circuit is received series resonant tank, series resonant tank is received the measurement control loop, measures the signal of control loop and receives variable frequency power source.
The utility model makes whole series resonant tank reach low and disturbs no office to put by input filtering isolated loop and output terminal filter circuit.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is an input filtering isolated loop schematic diagram of the present utility model.
Fig. 3 is an output filter circuit schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of series resonance Withstand test device of low interference is made up of input filtering isolated loop a, variable frequency power source b, output filter circuit c, series resonant tank d and measurement control loop e, the AC power of input is connected to input filtering isolated loop a through K switch, the output of input filtering isolated loop a is connected to variable frequency power source b, the output of variable frequency power source b is connected to output filter circuit c, output filter circuit c is connected to series resonant tank d, series resonant tank d is connected to and measures control loop e, measures control loop e and is connected to variable frequency power source b.
As shown in Figure 2, in described input filtering isolated loop a, adopted an isolating transformer B, the input end of described isolating transformer B is respectively equipped with inductance L 1, L2 and L3, inductance L 1 is connected with capacitor C 2 with the L2 input end, and inductance L 2 is connected with two shunt capacitance C1 and C3 with the L3 input end, and the output terminal of described isolating transformer B is respectively equipped with inductance L 4, L5 and L6, inductance L 4 is connected with capacitor C 6 with the L5 input end, and inductance L 5 is connected with two shunt capacitance C4 and C5 with the L6 input end.
As shown in Figure 3, among the described output filter circuit c, inductance L 7 is connected with L8, and inductance L 9 is connected with L10, and inductance L 7 is connected with capacitor C 7 with the output terminal of L9, and inductance L 8 is connected with capacitor C 8 with the L10 output terminal.
Three-phase alternating-current supply is received variable frequency power source b through input filtering isolated loop a, drop to the interference of variable frequency power source b minimum, variable frequency power source b receives series resonant tank d through output filter circuit c, variable frequency power source b and series resonant tank d are formed two independently earthed systems, further reduce the interference of variable frequency power source b, by measuring the monitoring of control loop e, realized that the no office of low interference of series resonant tank d puts.
Claims (3)
1. one kind low series resonance Withstand test device that disturbs is by input filtering isolated loop (a), variable frequency power source (b), output filter circuit (c), series resonant tank (d) and measurement control loop (e) are formed, it is characterized in that: the AC power of input is connected to input filtering isolated loop (a) through K switch, the output of input filtering isolated loop (a) is connected to variable frequency power source (b), the output of variable frequency power source (b) is connected to output filter circuit (c), output filter circuit (c) is connected to series resonant tank (d), series resonant tank (d) is connected to measures control loop (e), measures control loop (e) and is connected to variable frequency power source (b).
2. the series resonance Withstand test device according to the described low interference of claim 1 is characterized in that: in described input filtering isolated loop (a), adopted an isolating transformer B, the input end of described isolating transformer B is respectively equipped with inductance L 1, L2 and L3, inductance L 1 is connected with capacitor C 2 with the L2 input end, inductance L 2 is connected with two shunt capacitance C1 and C3 with the L3 input end, the output terminal of described isolating transformer B is respectively equipped with inductance L 4, L5 and L6, inductance L 4 is connected with capacitor C 6 with the L5 input end, and inductance L 5 is connected with two shunt capacitance C4 and C5 with the L6 input end.
3. the series resonance Withstand test device according to the described low interference of claim 1 is characterized in that: in the described output filter circuit (c), inductance L 7 is connected with L8, inductance L 9 is connected with L10, and inductance L 7 is connected with capacitor C 7 with the output terminal of L9, and inductance L 8 is connected with capacitor C 8 with the L10 output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200003442U CN201138369Y (en) | 2008-01-07 | 2008-01-07 | Series resonance pressure test apparatus of low interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200003442U CN201138369Y (en) | 2008-01-07 | 2008-01-07 | Series resonance pressure test apparatus of low interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138369Y true CN201138369Y (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200003442U Expired - Fee Related CN201138369Y (en) | 2008-01-07 | 2008-01-07 | Series resonance pressure test apparatus of low interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138369Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243288A (en) * | 2011-04-27 | 2011-11-16 | 丁鑫龙 | Frequency modulated series resonance withstand voltage detection device based on equal pulse width pulse-width modulation (PWM) control |
| CN103376392A (en) * | 2012-04-28 | 2013-10-30 | 上海宝冶集团有限公司 | High-voltage motor withstand voltage remote testing device |
| CN110398674A (en) * | 2019-08-30 | 2019-11-01 | 国网山西省电力公司电力科学研究院 | A kind of extra-high voltage parallel reactance is pressure-resistant and local discharge test device |
-
2008
- 2008-01-07 CN CNU2008200003442U patent/CN201138369Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243288A (en) * | 2011-04-27 | 2011-11-16 | 丁鑫龙 | Frequency modulated series resonance withstand voltage detection device based on equal pulse width pulse-width modulation (PWM) control |
| CN102243288B (en) * | 2011-04-27 | 2013-04-17 | 丁鑫龙 | Frequency modulated series resonance voltage-withstand detection device based on equal pulse width pulse-width modulation (PWM) control |
| CN103376392A (en) * | 2012-04-28 | 2013-10-30 | 上海宝冶集团有限公司 | High-voltage motor withstand voltage remote testing device |
| CN110398674A (en) * | 2019-08-30 | 2019-11-01 | 国网山西省电力公司电力科学研究院 | A kind of extra-high voltage parallel reactance is pressure-resistant and local discharge test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20150107 |
|
| EXPY | Termination of patent right or utility model |