CN107621562A - A kind of single-phase meter shunting accurate judgement method for being used to analyze stealing - Google Patents
A kind of single-phase meter shunting accurate judgement method for being used to analyze stealing Download PDFInfo
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- CN107621562A CN107621562A CN201710600938.0A CN201710600938A CN107621562A CN 107621562 A CN107621562 A CN 107621562A CN 201710600938 A CN201710600938 A CN 201710600938A CN 107621562 A CN107621562 A CN 107621562A
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Abstract
A kind of single-phase meter shunting accurate judgement method for being used to analyze stealing, is related to stealing analysis method.The analysis of stealing at present is not comprehensive, common zero line erroneous judgement, misjudgement be present.The present invention comprises the following steps：1）Monthly call the A phase currents and neutral line current of the single-phase user's intelligent meter of a low pressure together thoroughly；2）Judge whether that single-phase meter shunts；3）Judge whether that single-phase meter shunting occurs in polylith table under same terminal, if then suspecting common zero line situation be present, not as abnormal generation；4）All users of common zero line situation to suspection be present, called together thoroughly again at second day, change and still meet shunting Rule of judgment if compared with the day before yesterday, judge whether common zero line situation again；5）To the electric energy meter in the absence of common zero line, called together thoroughly again after certain interval of time, if changing and still meeting shunting Rule of judgment with previous compare, just ultimately generate exception.The technical program removes common zero line situation, prevents from judging by accident and misjudges.
Description
Technical field
The present invention relates to stealing analysis method, a kind of especially single-phase meter shunting accurate judgement side for being used to analyze stealing
Method.
Background technology
It is to meet the direction of international grid technology development to build power user power consumption information acquisition system, and builds intelligence
The important component of power network, it meets the requirement of socio-economic development, is to expand domestic demand, and accelerates city and upgrade of rural power grids
Important measures；It is information system for power enterprise engineering construction and marketing metering, meter reading, the important base of expenses standard construction
Plinth, by the decision-making of powerful support electric power enterprise, much sooner, more science, promotion development of company realize huge leap.It is well known that
In normal work, the electric current of single-phase electric energy meter phase line and the neutral conductor should be equal, if unequal, referred to as single-phase electric energy meter shunts
Abnormal, the exception mainly judges single-phase electric energy meter phase line current less than neutral current, due to single-phase electric energy meter be according to
Electric flux is measured according to the phase line current of meter, the phenomenon of neutral current is less than if there is phase line current, then can cause table
Meter counts electric flux less, it is understood that there may be wiring mistake or stealing electricity phenomenon.But current stealing analysis is not comprehensive, such as common zero line be present
Erroneous judgement, the situation of misjudgement, it is necessary to improve, the determination methods of one system of formation, to improve the accuracy of stealing analysis in time.This
The single-phase meter for being used to analyze stealing that invention is introduced, which shunts accurate judgement method, can effectively remove common zero line situation, prevent from missing
Sentence and misjudge；The electric energy meter that there may be stealing situation is investigated comprehensively, improves accuracy and the stealing of stealing judgement
What is judged is comprehensive.
The content of the invention
For the present invention based on the analysis method of current single-phase meter shunting event, increase judges whether polylith under same terminal
There is the null wire shared situation of single-phase meter shunting in table, so as to remove the erroneous judgement of null wire shared, misjudgement, there is provided one kind is stolen for analysis
The single-phase meter shunting accurate judgement method of electricity, to improve the purpose of stealing precision of analysis.Therefore, the present invention takes following technology
Scheme.
A kind of single-phase meter shunting accurate judgement method for being used to analyze stealing, it is characterised in that comprise the following steps：
1）Monthly call the A phase currents and neutral line current of the single-phase user's intelligent meter of a low pressure together thoroughly；
2）A phase currents and neutral line current are obtained, judges K1<Neutral line current<In the case of K2,（Neutral line current-A phase currents）/ zero
Whether line current if more than K3 if thinks single-phase meter shunt more than K3；I.e.：
K1<I0<K2 ；K1 takes 0.1A, K2 to take 60A；
In above formula：I0For neutral line current；
And (I0-IA)/ I0>K3；K3 takes 50%；
In above formula：I0For neutral line current；IAFor A phase currents；
3）Judge whether that single-phase meter shunting occurs in polylith table under same terminal, if then suspecting common zero line situation be present, do not make
For abnormal generation；
4）All users under the affiliated I types collector of intelligent meter or II type concentrators of common zero line situation to suspection be present,
Call its A phase current and neutral line current together thoroughly again within second day, if A phase currents with neutral line current and changed compared with the day before yesterday and
Still meet shunting Rule of judgment, judge whether common zero line situation again；
I.e.：I0X- I0≠0； IAX- IA≠0；
In above formula：I0Survey neutral line current is called together to be previous；I0XSurvey neutral line current is called together for this； IASurvey neutral line current is called together to be previous；IAX
Survey neutral line current is called together for this；
And K1<I0X<K2 ；K1 takes 0.1A, K2 to take 60A；
In above formula：I0XFor this neutral line current；
And (I0X-IAX)/ I0X>K3；K3 takes 50%；
In above formula：I0XFor this neutral line current；IAXFor this A phase current；
5）To the electric energy meter in the absence of common zero line, its A phase current and neutral line current are called after certain interval of time together thoroughly again, if
A phase currents with neutral line current and it is previous compared with change and still meet shunting Rule of judgment, just ultimately generate exception；
I.e.：I0Y- I0≠0； IAY- IA≠0；
In formula：I0Survey neutral line current is called together to be previous； I0YSurvey neutral line current is called together for this； IASurvey neutral line current is called together to be previous；IAY
Survey neutral line current is called together for this；
And
K1<I0Y<K2；K1 takes 0.1A, K2 to take 60A；
In above formula：I0YFor this neutral line current；
And
(I0Y-IAY)/ I0Y>K3；K3 takes 50%；
In above formula：I0YFor this neutral line current；IAYFor this A phase current.
The technical program removes common zero line situation, prevents from judging by accident and misjudges；Electric energy meter to there may be stealing situation
Investigated comprehensively, improve stealing judgement accuracy and stealing judge it is comprehensive.
As further improving and supplementing to above-mentioned technical proposal, present invention additionally comprises following additional technical feature.
In step 2）In, threshold values 50%, in 0.1A<Neutral line current<In the case of 60A,（Neutral line current-A phase currents）/
Neutral line current>When 50%, it is believed that single-phase meter shunts.
In step 5）In, to the electric energy meter in the absence of common zero line, interval calls its A phase current and zero together thoroughly again after 5 minutes
Line current, if A phase currents with neutral line current and it is previous compared with change and still meet shunting Rule of judgment, just finally
Generation is abnormal.
Beneficial effect：The technical program removes common zero line situation, prevents from judging by accident and misjudges；To there may be stealing situation
Electric energy meter investigated comprehensively, improve stealing judgement accuracy and stealing judge it is comprehensive.
Brief description of the drawings
Fig. 1 is flow chart of the present invention.
Embodiment
Technical scheme is described in further detail below in conjunction with Figure of description.
For single-phase user, A phase currents should be consistent with neutral line current.Differ for A phase currents and neutral line current
Cause, be defined as single-phase meter shunting.
As shown in figure 1, the present invention comprises the following steps：
1）Monthly call the A phase currents and neutral line current of the single-phase user's intelligent meter of a low pressure together thoroughly；
2）A phase currents and neutral line current are obtained, judges K1<Neutral line current<In the case of K2,（Neutral line current-A phase currents）/ zero
Whether line current if more than K3 if thinks single-phase meter shunt more than K3；I.e.：
K1<I0<K2 ；K1 takes 0.1A, K2 to take 60A；
In above formula：I0For neutral line current；
And (I0-IA)/ I0>K3；K3 takes 50%；
In above formula：I0For neutral line current；IAFor A phase currents；
3）Judge whether that single-phase meter shunting occurs in polylith table under same terminal, if then suspecting common zero line situation be present, do not make
For abnormal generation；
4）All users under the affiliated I types collector of intelligent meter or II type concentrators of common zero line situation to suspection be present,
Call its A phase current and neutral line current together thoroughly again within second day, if A phase currents with neutral line current and changed compared with the day before yesterday and
Still meet shunting Rule of judgment, judge whether common zero line situation again；
I.e.：I0X- I0≠0； IAX- IA≠0；
In above formula：I0Survey neutral line current is called together to be previous；I0XSurvey neutral line current is called together for this； IASurvey neutral line current is called together to be previous；IAX
Survey neutral line current is called together for this；
And K1<I0X<K2 ；K1 takes 0.1A, K2 to take 60A；
In above formula：I0XFor this neutral line current；
And (I0X-IAX)/ I0X>K3；K3 takes 50%；
In above formula：I0XFor this neutral line current；IAXFor this A phase current；
5）To the electric energy meter in the absence of common zero line, its A phase current and neutral line current are called after certain interval of time together thoroughly again, if
A phase currents with neutral line current and it is previous compared with change and still meet shunting Rule of judgment, just ultimately generate exception.
I.e.：I0Y- I0≠0； IAY- IA≠0；
In formula：I0Survey neutral line current is called together to be previous； I0YSurvey neutral line current is called together for this； IASurvey neutral line current is called together to be previous；IAY
Survey neutral line current is called together for this；
And
K1<I0Y<K2；K1 takes 0.1A, K2 to take 60A；
In above formula：I0YFor this neutral line current；
And
(I0Y-IAY)/ I0Y>K3；K3 takes 50%；
In above formula：I0YFor this neutral line current；IAYFor this A phase current.
To improve the accuracy and processing speed that judge, in step 2）In, threshold values 50%, in 0.1A<Neutral line current<60A
In the case of,（Neutral line current-A phase currents）/ neutral line current>When 50%, it is believed that single-phase meter shunts.
To improve the accuracy of processing speed and processing；In step 5）In, to the electric energy meter in the absence of common zero line, interval
Call its A phase current and neutral line current after 5 minutes together thoroughly again, if A phase currents with neutral line current and it is previous compared with change
And still meet shunting Rule of judgment, just ultimately generate exception.
A kind of single-phase meter shunting accurate judgement method for being used to analyze stealing shown in figure 1 above is specific reality of the invention
Apply example, embodied substantive distinguishing features of the present invention and progress, can according to reality use needs, the present invention enlightenment under,
Carry out the equivalent modifications of shape, structure etc. to it, this programme protection domain row.
Claims (3)
- A kind of 1. single-phase meter shunting accurate judgement method for being used to analyze stealing, it is characterised in that comprise the following steps：1）Monthly call the A phase currents and neutral line current of the single-phase user's intelligent meter of a low pressure together thoroughly；2）A phase currents and neutral line current are obtained, judges K1<Neutral line current<In the case of K2,（Neutral line current-A phase currents）/ zero Whether line current if more than K3 if thinks single-phase meter shunt more than K3；I.e.：K1<I0<K2 ；K1 takes 0.1A, K2 to take 60A；In above formula：I0For neutral line current；And (I0-IA)/ I0>K3；K3 takes 50%；In above formula：I0For neutral line current；IAFor A phase currents；3）Judge whether that single-phase meter shunting occurs in polylith table under same terminal, if then suspecting common zero line situation be present, do not make For abnormal generation；4）All users under the affiliated I types collector of intelligent meter or II type concentrators of common zero line situation to suspection be present, Call its A phase current and neutral line current together thoroughly again within second day, if A phase currents with neutral line current and changed compared with the day before yesterday and Still meet shunting Rule of judgment, judge whether common zero line situation again；I.e.：I0X- I0≠0； IAX- IA≠0；In above formula：I0Survey neutral line current is called together to be previous；I0XSurvey neutral line current is called together for this； IASurvey neutral line current is called together to be previous；IAX Survey neutral line current is called together for this；And K1<I0X<K2 ；K1 takes 0.1A, K2 to take 60A；In above formula：I0XFor this neutral line current；And (I0X-IAX)/ I0X>K3；K3 takes 50%；In above formula：I0XFor this neutral line current；IAXFor this A phase current；5）To the electric energy meter in the absence of common zero line, its A phase current and neutral line current are called together thoroughly again after being spaced the N times, if A phases Electric current with neutral line current and it is previous compared with change and still meet shunting Rule of judgment, just ultimately generate exception；I.e.：I0Y- I0≠0； IAY- IA≠0；In formula：I0Survey neutral line current is called together to be previous； I0YSurvey neutral line current is called together for this； IASurvey neutral line current is called together to be previous；IAY Survey neutral line current is called together for this；AndK1<I0Y<K2；K1 takes 0.1A, K2 to take 60A；In above formula：I0YFor this neutral line current；And(I0Y-IAY)/ I0Y>K3；K3 takes 50%；In above formula：I0YFor this neutral line current；IAYFor this A phase current.
- A kind of 2. single-phase meter shunting accurate judgement method for being used to analyze stealing according to claim 1, it is characterised in that： In step 2）In, threshold values 50%, in 0.1A<Neutral line current<In the case of 60A,（Neutral line current-A phase currents）/ neutral line current> When 50%, it is believed that single-phase meter shunts.
- A kind of 3. single-phase meter shunting accurate judgement method for being used to analyze stealing according to claim 1, it is characterised in that： In step 5）In, to the electric energy meter in the absence of common zero line, interval calls its A phase current and neutral line current together thoroughly again after 5 minutes, such as Fruit A phase currents with neutral line current and it is previous compared with change and still meet shunting Rule of judgment, just ultimately generate exception.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110736865A (en) * | 2019-12-05 | 2020-01-31 | 国网江苏省电力有限公司南通供电分公司 | three-phase user electricity stealing judgment and positioning method |
| CN110763886A (en) * | 2019-12-05 | 2020-02-07 | 国网江苏省电力有限公司南通供电分公司 | Single-phase user electricity stealing judgment and positioning method |
| CN111650424A (en) * | 2020-06-22 | 2020-09-11 | 国网福建省电力有限公司 | Zero-live line current anomaly monitoring method and system based on least square method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110736865A (en) * | 2019-12-05 | 2020-01-31 | 国网江苏省电力有限公司南通供电分公司 | three-phase user electricity stealing judgment and positioning method |
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| CN110736865B (en) * | 2019-12-05 | 2021-11-12 | 国网江苏省电力有限公司南通供电分公司 | Three-phase user electricity stealing judgment and positioning method |
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| CN111650424A (en) * | 2020-06-22 | 2020-09-11 | 国网福建省电力有限公司 | Zero-live line current anomaly monitoring method and system based on least square method |
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| CN107621562B (en) | 2019-04-16 |
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