CN102621406A - Phase sequence detection method for high-voltage system - Google Patents
Phase sequence detection method for high-voltage system Download PDFInfo
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- CN102621406A CN102621406A CN2012101042394A CN201210104239A CN102621406A CN 102621406 A CN102621406 A CN 102621406A CN 2012101042394 A CN2012101042394 A CN 2012101042394A CN 201210104239 A CN201210104239 A CN 201210104239A CN 102621406 A CN102621406 A CN 102621406A
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- phase sequence
- phase
- sequence
- generator
- demagnetization
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Abstract
The invention discloses a phase sequence detection method for a high-voltage system. The phase sequence detection method comprises the following steps of: starting a power generator set, pressing a power generator demagnetizing switch to demagnetize through a power generator, connecting a low-voltage phase sequence meter to the power generator end for directly measuring a phase sequence after demagnetization, recording an indication of the phase sequence meter, and stopping after the indication is recorded; and then starting another power generator set, measuring according to the method, ensuring that the solution of the low-voltage phase sequence meter connection circuit is consistent with that of the first connection circuit, if the steering direction of the phase sequence meter is consistent, indicating that the phase sequence is consistent, otherwise, indicating that the phase sequence is opposite, and adjusting the phase sequence. The phase sequence detection method has the advantages that the measurement mode is simple, the method is convenient to operate, and the measurement result is accurate and reliable.
Description
Technical field
The present invention discloses a kind of phase sequence calibration method of phase sequence calibration method, particularly a kind of high-tension system.
Background technology
At present; The alternating current that generator sends in the high tension distribution system can't directly be measured voltage phase sequence; Whether therefore can't judge accurately in high tension distribution system and before the electricity and satisfy and electric condition, phase sequence is consistent, voltage is consistent, frequency is consistent, therefore and in the electric process has hidden danger; Can not directly measure high-tension electricity based on present technology, therefore most work all is to draw on high-tension side phase sequence through indirect measurement low-pressure side phase sequence through reasoning.
Summary of the invention
The objective of the invention is provides a kind of high efficiency, simple to operate in order to overcome above deficiency, controls easily, and measures the phase sequence calibration method of high-tension system accurately.
The object of the invention is realized through following technical scheme: a kind of phase sequence calibration method of high-tension system may further comprise the steps: starter-generator group at first, and the question generator group is stable, and genset voltage between phases and frequency reach ratings; Press the generator demagnetizing switch, come demagnetization, the shortest time of voltage of generator is descended rapidly through generator; Behind the demagnetization low pressure phase-sequence meter is inserted generator end and directly measure phase sequence, phase-sequence meter indication forward or reverse; Record is carried out in the phase-sequence meter indication, shut down after record is good; Start an other genset, measure, guarantee that low pressure phase-sequence meter place in circuit is consistent with the solution of article one place in circuit according to above method; If phase-sequence meter turn to unanimity; Show that then phase sequence is consistent, if switched in opposite then explain that phase sequence is opposite needs the adjustment phase sequence; Said demagnetization generally adopts degaussing switch energy-dissipating type demagnetization mode and de-excitation resistance energy-dissipating type demagnetization; Because the power of generator increases gradually, degaussing switch is installed in general employing additional and non-linear de-excitation resistance is realized, promptly adopts de-excitation resistance energy-dissipating type mode at present.
The present invention just can directly measure the phase sequence of voltage at the generating pusher side with existing low pressure phase-sequence meter, thereby makes reasonable right judgement, and metering system is simple, and is easy to operate, measures accurately.
Embodiment:
In order to deepen to understanding of the present invention, will combine embodiment that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
The embodiment of the phase sequence calibration method of a kind of high-tension system of the present invention may further comprise the steps: starter-generator group at first, and the question generator group is stable, and genset voltage between phases and frequency reach ratings; Press the generator demagnetizing switch, come demagnetization, the shortest time of voltage of generator is descended rapidly through generator; Behind the demagnetization low pressure phase-sequence meter is inserted generator end and directly measure phase sequence, phase-sequence meter indication forward or reverse; Record is carried out in the phase-sequence meter indication, shut down after record is good; Start an other genset, measure, guarantee that low pressure phase-sequence meter place in circuit is consistent with the solution of article one place in circuit according to above method; If phase-sequence meter turn to unanimity; Show that then phase sequence is consistent, if switched in opposite then explain that phase sequence is opposite needs the adjustment phase sequence; Said demagnetization generally adopts degaussing switch energy-dissipating type demagnetization mode and de-excitation resistance energy-dissipating type demagnetization; Because the power of generator increases gradually, degaussing switch is installed in general employing additional and non-linear de-excitation resistance is realized, promptly adopts de-excitation resistance energy-dissipating type mode at present.
The present invention reduces generator voltage; Simultaneously can directly not be depressured to 0 volt again, voltage has satisfied direct Testing requirement in the process of degaussing, just can directly measure the phase sequence of voltage at the generating pusher side with existing low pressure phase-sequence meter; Thereby make reasonable right judgement; Metering system is simple, and is easy to operate, measures accurately.
Claims (2)
1. the phase sequence calibration method of a high-tension system is characterized in that: may further comprise the steps
A, starter-generator group at first, the question generator group is stable, and genset voltage between phases and frequency reach ratings;
B, press the generator demagnetizing switch, come demagnetization, the shortest time of voltage of generator is descended rapidly through generator;
Behind c, the demagnetization low pressure phase-sequence meter is inserted generator end and directly measure phase sequence, phase-sequence meter indication forward or reverse;
D, record is carried out in phase-sequence meter indication, shut down after record is good;
E, the other genset of startup are measured according to above method, guarantee that low pressure phase-sequence meter place in circuit is consistent with the solution of article one place in circuit; If phase-sequence meter turn to unanimity; Show that then phase sequence is consistent, if switched in opposite then explain that phase sequence is opposite needs the adjustment phase sequence.
2. according to the phase sequence calibration method of the said a kind of high-tension system of claim 1, it is characterized in that: said demagnetization generally adopts degaussing switch energy-dissipating type demagnetization mode and de-excitation resistance energy-dissipating type demagnetization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101042394A CN102621406A (en) | 2012-04-11 | 2012-04-11 | Phase sequence detection method for high-voltage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101042394A CN102621406A (en) | 2012-04-11 | 2012-04-11 | Phase sequence detection method for high-voltage system |
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| Publication Number | Publication Date |
|---|---|
| CN102621406A true CN102621406A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101042394A Pending CN102621406A (en) | 2012-04-11 | 2012-04-11 | Phase sequence detection method for high-voltage system |
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| CN (1) | CN102621406A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359634Y (en) * | 2008-12-26 | 2009-12-09 | 广州擎天实业有限公司 | Integral intelligent debugging device for excitation equipment |
| CN101710816A (en) * | 2009-09-15 | 2010-05-19 | 西安陕鼓动力股份有限公司 | Remote automatic switching method of DC excitation source of AC exciter |
| CN101788614A (en) * | 2009-12-28 | 2010-07-28 | 江苏省电力公司苏州供电公司 | High and low voltage integrated phase-sequence phase meter and detection method thereof |
| CN101984539A (en) * | 2010-11-25 | 2011-03-09 | 杭州三和电控设备有限公司 | Magnetic blow-out switch operation controller |
-
2012
- 2012-04-11 CN CN2012101042394A patent/CN102621406A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359634Y (en) * | 2008-12-26 | 2009-12-09 | 广州擎天实业有限公司 | Integral intelligent debugging device for excitation equipment |
| CN101710816A (en) * | 2009-09-15 | 2010-05-19 | 西安陕鼓动力股份有限公司 | Remote automatic switching method of DC excitation source of AC exciter |
| CN101788614A (en) * | 2009-12-28 | 2010-07-28 | 江苏省电力公司苏州供电公司 | High and low voltage integrated phase-sequence phase meter and detection method thereof |
| CN101984539A (en) * | 2010-11-25 | 2011-03-09 | 杭州三和电控设备有限公司 | Magnetic blow-out switch operation controller |
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Application publication date: 20120801 |