CN105334402A - Online low-voltage nuclear phase device and nuclear phase method thereof - Google Patents
Online low-voltage nuclear phase device and nuclear phase method thereof Download PDFInfo
- Publication number
- CN105334402A CN105334402A CN201510805822.1A CN201510805822A CN105334402A CN 105334402 A CN105334402 A CN 105334402A CN 201510805822 A CN201510805822 A CN 201510805822A CN 105334402 A CN105334402 A CN 105334402A
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- phase
- power supply
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- voltage
- cpu
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
Abstract
The invention provides an online low-voltage nuclear phase device and a nuclear phase method thereof. Two metering modules are used for acquiring three-phase phase voltage, linear voltage and phase angles of two paths of power supplies on the two sides of a switch; a CPU (Central Processing Unit) is used for calculating three-phase voltage difference and phase angle difference of the power supplies on the two sides of the switch according to the three-phase phase voltage, the linear voltage and the phase angles of the two metering modules; the CPU is used for judging whether the three-phase voltage difference and the phase angle difference of the power supplies on the two sides of the switch are the same or not; if so, a nuclear phase passes; and if not, the CPU controls an alarming lamp to flicker to prompt errors. According to the online low-voltage nuclear phase device and the nuclear phase method thereof, the safety and convenience for nuclear phase work are improved.
Description
Technical field
The present invention relates to a kind of online low pressure phase checking device and nuclear-phase method thereof.
Background technology
Nuclear phase, refer in electric system electric operation with instrument or other means check two power supplys or loop phase, whether phase sequence identical.In the operation of actual electric power, electric substation after newly-built, renovating and enlarging and transmission line of electricity, and complete at line maintenance, before user's power transmission, all must carry out the test of three-phase circuit nuclear phase, to guarantee that transmission line of electricity phase sequence is consistent with the required phase sequence of user's threephase load.
Nuclear phase, for two road power supplys, when two road power supplys need to power to same consumer, when dropping into, will carry out nuclear phase at point arranged side by side.If when two road power supplys need to fall electricity side by side, if not nuclear phase, owing to installing wiring error, may occur that phase sequence (phase place) is inconsistent, cause short circuit accident, affect normal power supply.If two road power supplys need to have a power failure when falling electricity, if not nuclear phase, may be inconsistent due to phase sequence, cause the abnormal running of three-phase equipment, as the reversion of motor.Therefore, when the second road power supply drops into, nuclear phase must be carried out with first via power supply.
To 0.4KV system, generally carrying out nuclear phase with multimeter, in order to improve security and the convenience of nuclear phase work, adopting online low pressure phase checking device to replace multimeter can reach the effect of getting twice the result with half the effort.
Summary of the invention
The invention provides a kind of online low pressure phase checking device and nuclear-phase method thereof, improve security and the convenience of nuclear phase work.
In order to achieve the above object, the invention provides a kind of online low pressure phase checking device, comprise:
Two metering modules, gather the three-phase phase voltage of switch both sides two-way power supply, line voltage and phasing degree respectively;
CPU, it is electrically connected two metering modules, calculates phase angle difference and three-phase pressure reduction;
Three-phase input end of described metering module is connected respectively three-phase supply, the ground terminal ground of metering module.
Described online low pressure phase checking device also comprises liquid crystal display, and it is electrically connected CPU, the display measurement result of metering module and the result of calculation of CPU.
Described online low pressure phase checking device also comprises alarm lamp, and it is electrically connected CPU, sends alerting signal.
The present invention also provides a kind of nuclear-phase method, comprises following steps:
Step S1, two metering modules are connected respectively to the two-way power supply of switch both sides;
Step S2, two metering modules gather the three-phase phase voltage of switch both sides two-way power supply, line voltage and phasing degree respectively;
The three-phase phase voltage that step S3, CPU gather according to two metering modules, line voltage and phasing degree, the three-phase pressure reduction of compute switch both sides power supply and phase angle difference;
Step S4, CPU judge that whether the three-phase pressure reduction of switch both sides power supply is consistent with phase angle difference, if unanimously, by nuclear phase, if inconsistent, CPU controls alarm lamp flicker, and prompting makes mistakes.
In described step S1, three-phase input end of metering module is connected respectively three-phase supply, the ground terminal ground of metering module.
In described step S2, using any in the power supply of switch side as reference value, measure the phasing degree of three-phase in the phasing degree of other two-phases in this road power supply and switch opposite side power supply respectively.
Invention increases security and the convenience of nuclear phase work.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of a kind of online low pressure phase checking device provided by the invention.
Embodiment
Illustrate preferred embodiment of the present invention according to Fig. 1 below.
As shown in Figure 1, the invention provides a kind of online low pressure phase checking device, comprise:
Two metering modules 101, gather the three-phase phase voltage of switch both sides two-way power supply, line voltage and phasing degree respectively;
CPU102, it is electrically connected two metering modules 101, calculates phase angle difference and three-phase pressure reduction;
Liquid crystal display 103, it is electrically connected CPU102, the display measurement result of metering module 101 and the result of calculation of CPU102;
Alarm lamp 104, it is electrically connected CPU102, sends alerting signal.
Three-phase input end of described metering module is connected respectively three-phase supply, the ground terminal ground of metering module.
As shown in Figure 1, in the present embodiment, the A phase of the input terminal A1 connecting valve side power supply of one road metering module 101, input terminal B1 connects the B phase of power supply, input terminal C1 connects the C phase of power supply, input terminal N1 ground connection, the A phase of the input terminal A1 connecting valve opposite side power supply of another road metering module 101, input terminal B2 connects the B phase of power supply, input terminal C2 connects the C phase of power supply, input terminal N2 ground connection, two-way metering module 101 measures three-phase phase voltage and the line voltage of switch both sides power supply respectively, and the phase place choosing a wherein road A1 phase is as reference value (0 degree), go to the phasing degree of B1 and C1 measuring this road power supply respectively, remove using the phase place of A1 phase as reference value the A2 measuring another road power supply simultaneously, the phasing degree of B2 and C2.The three-phase phase voltage that CPU102 gathers according to two metering modules 101, line voltage and phasing degree, the three-phase pressure reduction of compute switch both sides power supply and phase angle difference, carry out nuclear phase, if three-phase pressure reduction and the phase angle difference of switch both sides power supply are inconsistent, then control alarm lamp 104 flicker to report to the police, and the liquid crystal display 103 display measurement result of metering module 101 and the result of calculation of CPU102 in real time.
The present invention also provides a kind of nuclear-phase method, comprises following steps:
Step S1, two metering modules are connected respectively to the two-way power supply of switch both sides;
Wherein, three-phase input end of metering module is connected respectively three-phase supply, the ground terminal ground of metering module;
Step S2, two metering modules gather the three-phase phase voltage of switch both sides two-way power supply, line voltage and phasing degree respectively;
Wherein, using any in the power supply of switch side as reference value, measure the phasing degree of three-phase in the phasing degree of other two-phases in this road power supply and switch opposite side power supply respectively;
The three-phase phase voltage that step S3, CPU gather according to two metering modules, line voltage and phasing degree, the three-phase pressure reduction of compute switch both sides power supply and phase angle difference;
Step S4, CPU judge that whether the three-phase pressure reduction of switch both sides power supply is consistent with phase angle difference, if unanimously, by nuclear phase, if inconsistent, carry out step S5;
Step S5, CPU control alarm lamp flicker, and prompting makes mistakes.
Invention increases security and the convenience of nuclear phase work.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. an online low pressure phase checking device, is characterized in that, comprise:
Two metering modules (101), gather the three-phase phase voltage of switch both sides two-way power supply, line voltage and phasing degree respectively;
CPU(102), it is electrically connected two metering modules (101), calculates phase angle difference and three-phase pressure reduction;
Three-phase input end of described metering module is connected respectively three-phase supply, the ground terminal ground of metering module.
2. online low pressure phase checking device as claimed in claim 1, it is characterized in that, described online low pressure phase checking device also comprises liquid crystal display (103), and it is electrically connected CPU(102), display metering module (101) measurement result and CPU(102) result of calculation.
3. online low pressure phase checking device as claimed in claim 1, it is characterized in that, described online low pressure phase checking device also comprises alarm lamp (104), and it is electrically connected CPU(102), send alerting signal.
4. utilize as the online low pressure phase checking device in claim 1-3 as described in any one carries out the method for nuclear phase, it is characterized in that, comprise following steps:
Step S1, two metering modules are connected respectively to the two-way power supply of switch both sides;
Step S2, two metering modules gather the three-phase phase voltage of switch both sides two-way power supply, line voltage and phasing degree respectively;
The three-phase phase voltage that step S3, CPU gather according to two metering modules, line voltage and phasing degree, the three-phase pressure reduction of compute switch both sides power supply and phase angle difference;
Step S4, CPU judge that whether the three-phase pressure reduction of switch both sides power supply is consistent with phase angle difference, if unanimously, by nuclear phase, if inconsistent, CPU controls alarm lamp flicker, and prompting makes mistakes.
5. nuclear-phase method as claimed in claim 4, is characterized in that, in described step S1, three-phase input end of metering module is connected respectively three-phase supply, the ground terminal ground of metering module.
6. nuclear-phase method as claimed in claim 4, is characterized in that, in described step S2, using any in the power supply of switch side as reference value, measures the phasing degree of three-phase in the phasing degree of other two-phases in this road power supply and switch opposite side power supply respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510805822.1A CN105334402A (en) | 2015-11-20 | 2015-11-20 | Online low-voltage nuclear phase device and nuclear phase method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510805822.1A CN105334402A (en) | 2015-11-20 | 2015-11-20 | Online low-voltage nuclear phase device and nuclear phase method thereof |
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| Publication Number | Publication Date |
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| CN105334402A true CN105334402A (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510805822.1A Pending CN105334402A (en) | 2015-11-20 | 2015-11-20 | Online low-voltage nuclear phase device and nuclear phase method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646103A (en) * | 2018-04-11 | 2018-10-12 | 国网河南省电力公司郑州供电公司 | Automatic kernel phase system based on car switch and device |
| CN110988477A (en) * | 2019-12-24 | 2020-04-10 | 广东电网有限责任公司 | Power grid phase judgment and checking method |
| CN112946513A (en) * | 2021-02-03 | 2021-06-11 | 山东钢铁股份有限公司 | Phase checking method for power supply of transformer substation |
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| 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 |
| CN202494728U (en) * | 2012-03-07 | 2012-10-17 | 中国十九冶集团有限公司 | Low-voltage phase checking device |
| CN202837413U (en) * | 2012-09-10 | 2013-03-27 | 河南省电力公司驻马店供电公司 | Electric power line phase-verification device |
| CN104062513A (en) * | 2014-05-20 | 2014-09-24 | 东南大学 | Secondary phase detecting instrument and method |
| CN104569629A (en) * | 2015-02-03 | 2015-04-29 | 孙超 | Phase sequence tester of low-voltage cables |
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2015
- 2015-11-20 CN CN201510805822.1A patent/CN105334402A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202494728U (en) * | 2012-03-07 | 2012-10-17 | 中国十九冶集团有限公司 | Low-voltage phase checking device |
| CN202837413U (en) * | 2012-09-10 | 2013-03-27 | 河南省电力公司驻马店供电公司 | Electric power line phase-verification device |
| CN104062513A (en) * | 2014-05-20 | 2014-09-24 | 东南大学 | Secondary phase detecting instrument and method |
| CN104569629A (en) * | 2015-02-03 | 2015-04-29 | 孙超 | Phase sequence tester of low-voltage cables |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646103A (en) * | 2018-04-11 | 2018-10-12 | 国网河南省电力公司郑州供电公司 | Automatic kernel phase system based on car switch and device |
| CN110988477A (en) * | 2019-12-24 | 2020-04-10 | 广东电网有限责任公司 | Power grid phase judgment and checking method |
| CN112946513A (en) * | 2021-02-03 | 2021-06-11 | 山东钢铁股份有限公司 | Phase checking method for power supply of transformer substation |
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Application publication date: 20160217 |