CN202735416U - Electrical power system secondary automatic phasing device - Google Patents
Electrical power system secondary automatic phasing device Download PDFInfo
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- CN202735416U CN202735416U CN 201220466830 CN201220466830U CN202735416U CN 202735416 U CN202735416 U CN 202735416U CN 201220466830 CN201220466830 CN 201220466830 CN 201220466830 U CN201220466830 U CN 201220466830U CN 202735416 U CN202735416 U CN 202735416U
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Abstract
The utility model discloses an electrical power system secondary automatic phasing device, characterized by comprising a host machine housing, a LCD panel, and integrated plugins. The plugins comprise an AC plugin, a CPU plugin, and a power supply plugin. The AC plugin can independently sample two paths of busbar voltage, totally eight alternating quantities at the same time. The CPU plugin analyzes secondary voltage conditions of two busbars according to basic criterions of nuclear phase. When secondary three-phase voltage amplitude setting constant values of the two busbars of an input device are larger than 10V, an in-phase voltage amplitude difference and a zero sequence voltage amplitude setting constant value are lower than 20V, and an in-phase voltage phase difference setting constant value is lower than 20 degrees, correct phasing is determined, and if conditions are not satisfied, the phasing is not correct. The device provides a prompt that whether a closing operation can be performed aimed at a phasing result. The electrical power system secondary automatic phasing device not only can improve efficiency and accuracy of secondary phasing operation, but also can be used for everyday monitoring of secondary voltage in a transformer station, and sends out alarm signals in time for various abnormity.
Description
Technical field
The utility model relates to electric system secondary automatic phasing device, is a kind of for automatically finishing the device that the substation secondary phasing is nuclear phase work.
Background technology
Transformer (or voltage transformer (VT)) finish install or overhaul after, transformer (or voltage transformer (VT)) changed inside and outside wiring or wiring group after, power circuit (or cable) wiring change or trend change after, changed with cyclization or when relevant secondary circuit overhauls side by side, all must carry out the three-phase circuit phasing, be nuclear phase test, consistent to guarantee the power supply three-phase phase-sequence that the different electrical power point provides.Whether phasing test is exactly to examine to need the phase sequence of cyclization or two power-supply systems arranged side by side (or transformer, voltage transformer (VT)) consistent, correct.Actual is to treat and the method for system's phase voltage difference of the same name and non-phase voltage difference of the same name is carried out by direct or indirect measurement.Be that phase voltage difference of the same name is zero, non-phase voltage difference of the same name is that the line magnitude of voltage---phase sequence is correct.For the 380V system, generally carry out phasing with multimeter; For 10-35KV neutral point isolated neutral system, generally carry out phasing with special high-pressure phasing bar; For 110KV and above solidly earthed neutral system, generally carry out phasing with PT.There is following problem by using the instruments such as multimeter to carry out artificial secondary phasing at the scene by the relay protection personnel at present:
1, need to cooperate operations staff's operation, so the stand-by period is very long, greatly reduces the work efficiency of the class of guarantor that continues, if misphase once occurs, again carry out the secondary phasing after once adjusting phase place, the time of wait is just longer;
2, in the manual phasing process, many factors causes existing the possibility of mistake, in case secondary phasing mistake will cause heavy losses and impact to equipment and electrical network.
Summary of the invention
The utility model is for avoiding the existing weak point of above-mentioned prior art, a kind of electric system secondary automatic phasing device easy to use is provided, efficient and the accuracy of the work of secondary phasing both can have been improved, also can be used for simultaneously secondary voltage in the daily supervision transformer station, for all kinds of unusually timely alerting signals of sending.
Be the technical solution problem, the utility model adopts following technical scheme:
The design feature of the utility model electric system secondary automatic phasing device is comprised of host housing, liquid crystal panel and integrated plug-in unit, and described plug-in unit comprises interchange plug-in unit, CPU card and power insert;
Described interchange plug-in unit, the simultaneously sampling of totally eight of acs of complete independently two-way busbar voltage;
Described CPU card, Basic Criteria according to nuclear phase is analyzed the secondary voltage situation of two-way bus, when the two-way bus secondary three-phase voltage amplitude of the input media definite value of adjusting is all adjusted definite value less than 20V greater than 10V, in-phase voltage difference in magnitude and residual voltage amplitude, and the in-phase voltage phase differential adjusts definite value during less than 20 °, determines that phasing is correct; Then phasing is incorrect if do not satisfy condition; Provide the prompting of " can carry out closing operation " for the nuclear phase result;
Described liquid crystal panel is used for checking the sampling of the secondary voltage of inputting phasing adjustement, comprises voltage magnitude and phase place; When not dropping into the nuclear phase function, can send respectively alarm signal for alternating voltage broken string and the female voltage phase sequence mistake of I/II, and show the fault type code; When dropping into the nuclear phase function, show the nuclear phase result;
Described power insert provides respectively work to input public power+110V with direct current 220V power supply and switching value.
Compared with the prior art, the utility model beneficial effect is embodied in:
The utility model is applied in the transformer station that has the power supply of two-way power supply point at least, to replace the artificial nucleus to use mutually, the on-the-spot artificial secondary phasing work stand-by period of solution is long emphatically, the problems such as efficient is low, can directly be judged according to the result of phasing adjustement by operator, can improve the accurate judgement to different electrical power point voltage phase place, greatly increase work efficiency.
Description of drawings
Fig. 1 is the bus PT abnormality alarming logical diagram of the utility model electric system secondary automatic phasing device;
Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are respectively the utility model different operating state logic figure.
Embodiment
Electric system secondary automatic phasing device is comprised of host housing, liquid crystal panel and integrated plug-in unit in the present embodiment, and plug-in unit comprises interchange plug-in unit, CPU card and power insert;
Exchange plug-in unit, simultaneously the sampling of totally eight of acs of complete independently two-way busbar voltage;
CPU card, Basic Criteria according to nuclear phase is analyzed the secondary voltage situation of two-way bus, when the two-way bus secondary three-phase voltage amplitude of the input media definite value of adjusting is all adjusted definite value less than 20V greater than 10V, in-phase voltage difference in magnitude and residual voltage amplitude, and the in-phase voltage phase differential adjusts definite value during less than 20 °, determines that phasing is correct; Then phasing is incorrect if do not satisfy condition; Provide the prompting of " can carry out closing operation " for the nuclear phase result;
Liquid crystal panel is used for checking the sampling of the secondary voltage of inputting phasing adjustement, comprises voltage magnitude and phase place; When not dropping into the nuclear phase function, can send respectively alarm signal for alternating voltage broken string and the female voltage phase sequence mistake of I/II, and show the fault type code; When dropping into the nuclear phase function, show the nuclear phase result;
Power insert provides respectively work to input public power+110V with direct current 220V power supply and switching value.
Illustrate different operating state of the present utility model below in conjunction with each figure:
Referring to Fig. 1, when the utility model electric system secondary automatic phasing device is in normal operating condition, device panel " RUN " lamp Chang Liang, when the nuclear phase function does not drop into, device has bus PT abnormal alarm function, also can send out respectively alarm signal when alternating voltage broken string, I/II busbar voltage phase sequence mistake and other abnormal conditions, accurately inform Exception Type and separate, liquid crystal display shows the fault type code, in time remind the operations staff to find and the unusual reason of elimination bus PT secondary, be conducive to the safe and stable operation of transformer station.The mutually criterion of "or" of line voltage drop and two conditions of negative sequence voltage rising is adopted in the inspection of bus PT abnormality alarming, and Fig. 3 is seen in time-delay 10S alarm.When the specified phase voltage of interchange was 57.7V, working value Ud and rreturn value Ur were fixed as 30V and 40V, and residual voltage 3Uo working value and rreturn value are fixed as 17V and 10V, and negative sequence voltage U21 working value and rreturn value are 10V and 6V; Among Fig. 1, d098:I bus PT broken string is thrown and is moved back; F484:I bus PT abnormality alarming, data-signal.
Referring to Fig. 2, when the utility model electric system secondary automatic phasing device is in normal operating condition, device panel " RUN " lamp Chang Liang, when the nuclear phase function drops into, I, II bus phase voltage all greater than 10V and negative phase-sequence less than 10V, and the corresponding pressure reduction of I, II bus A, B, C and angular difference are when all satisfying condition, through the time-delay of 1S, device judges that nuclear phase is correct, shows that nuclear phase successfully indicates; Among Fig. 2, d511: nuclear phase voltage difference definite value; D512: nuclear phase differential seat angle definite value; D513: the nuclear phase function drops into.
Referring to Fig. 3, when the utility model electric system secondary automatic phasing device is in normal operating condition, device panel " RUN " lamp Chang Liang, when the nuclear phase function drops into, if there is the A of two-phase or three phase supply mistake or bus PT in bus, B, C three-phase wiring error, certainly have non-corresponding phase differential seat angle too small, and the corresponding angles differential seat angle can be excessive.By negative sequence voltage, it is unusual to judge which bar bus wire phase sequence again, sends out the female voltage phase sequence abnormality alarming of I, II; Among Fig. 3, d511: nuclear phase voltage difference definite value; D512: nuclear phase differential seat angle definite value; D513: the nuclear phase function drops into; F636:I busbar voltage phase sequence abnormality alarming; F637:II busbar voltage phase sequence abnormality alarming.
Referring to Fig. 4, when the utility model electric system secondary automatic phasing device is in normal operating condition, device panel " RUN " lamp Chang Liang, when the nuclear phase function dropped into, I, II bus phase voltage were all greater than 10V, and I, II bus A, when the corresponding pressure reduction of B, C does not satisfy condition, through the time-delay of 1S, device is judged the nuclear phase mistake, shows the unsuccessful sign of nuclear phase, and some panel stand by lamp, send out I, the normal alarm of II busbar voltage difference; Among Fig. 4, d511: nuclear phase voltage difference definite value; D513: the nuclear phase function drops into; F635:I, the normal alarm of II busbar voltage difference.
Referring to Fig. 5, when the utility model electric system secondary automatic phasing device is in normal operating condition, device panel " RUN " lamp Chang Liang, when the nuclear phase function dropped into, I, II bus phase voltage were all greater than 10V, and I, II bus A, when the corresponding differential seat angle of B, C does not satisfy condition, through the time-delay of 1S, device is judged the nuclear phase mistake, shows the unsuccessful sign of nuclear phase, and some central signal two stand by lamps, send out I, II bus angular difference abnormality alarming; Among Fig. 5, d512: nuclear phase differential seat angle definite value; D513: the nuclear phase function drops into; F638:I, the unusual alarm of II bus differential seat angle.
The utility model electric system secondary automatic phasing device configuration nuclear phase function drops into pressing plate, and this pressing plate possesses the automatic phasing function when dropping into, and this pressing plate is not thrown timer and is used at the scene monitoring secondary voltage in the transformer station.
Claims (1)
1. an electric system secondary automatic phasing device is characterized in that being comprised of host housing, liquid crystal panel and integrated plug-in unit, and described plug-in unit comprises interchange plug-in unit, CPU card and power insert;
Described interchange plug-in unit, the simultaneously sampling of totally eight of acs of complete independently two-way busbar voltage;
Described CPU card, Basic Criteria according to nuclear phase is analyzed the secondary voltage situation of two-way bus, when the two-way bus secondary three-phase voltage amplitude of the input media definite value of adjusting is all adjusted definite value less than 20V greater than 10V, in-phase voltage difference in magnitude and residual voltage amplitude, and the in-phase voltage phase differential adjusts definite value during less than 20 °, determines that phasing is correct; Then phasing is incorrect if do not satisfy condition; Provide the prompting of " can carry out closing operation " for the nuclear phase result;
Described liquid crystal panel is used for checking the sampling of the secondary voltage of inputting phasing adjustement, comprises voltage magnitude and phase place; When not dropping into the nuclear phase function, can send respectively alarm signal for alternating voltage broken string and the female voltage phase sequence mistake of I/II, and show the fault type code; When dropping into the nuclear phase function, show the nuclear phase result;
Described power insert provides respectively work to input public power+110V with direct current 220V power supply and switching value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220466830 CN202735416U (en) | 2012-09-13 | 2012-09-13 | Electrical power system secondary automatic phasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220466830 CN202735416U (en) | 2012-09-13 | 2012-09-13 | Electrical power system secondary automatic phasing device |
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| Publication Number | Publication Date |
|---|---|
| CN202735416U true CN202735416U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220466830 Expired - Fee Related CN202735416U (en) | 2012-09-13 | 2012-09-13 | Electrical power system secondary automatic phasing device |
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| CN (1) | CN202735416U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772194A (en) * | 2016-12-26 | 2017-05-31 | 国网山东省电力公司青岛供电公司 | A kind of voltage transformer secondary voltage nuclear-phase method, device and detection means |
| CN110531179A (en) * | 2019-08-06 | 2019-12-03 | 天津华能变压器有限公司 | A kind of method of grounding transformer adjustment high pressure phase sequence |
-
2012
- 2012-09-13 CN CN 201220466830 patent/CN202735416U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772194A (en) * | 2016-12-26 | 2017-05-31 | 国网山东省电力公司青岛供电公司 | A kind of voltage transformer secondary voltage nuclear-phase method, device and detection means |
| CN110531179A (en) * | 2019-08-06 | 2019-12-03 | 天津华能变压器有限公司 | A kind of method of grounding transformer adjustment high pressure phase sequence |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20200913 |