CN109782090A - A method of judging that electricity consumer becomes relationship - Google Patents
A method of judging that electricity consumer becomes relationship Download PDFInfo
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- CN109782090A CN109782090A CN201910015223.8A CN201910015223A CN109782090A CN 109782090 A CN109782090 A CN 109782090A CN 201910015223 A CN201910015223 A CN 201910015223A CN 109782090 A CN109782090 A CN 109782090A
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Abstract
The method that a kind of judgement electricity consumer of the invention becomes relationship can solve the technical issues of existing electricity consumption point phase transformation relationship difficulty determines or can not judge.The following steps are included: S100, in the electricity consumption point for needing to judge phase transformation relationship, load the load of rated power, mutually monitor front and back electric current in offered load；S200, the corresponding electric current of source side before and after transformer low voltage leading-out terminal phase on-line monitoring offered load；S300, synchronous connection load-side and source side, and load-side is observed respectively in switching nominal load and source side respectively corresponds the variation of phase line current；Whether the difference of electric current is equal before and after S400, foundation load-side and source side can determine whether electricity consumption phase transformation relationship.The present invention is based on the synchronisms of electric current, bearing power/electric current of rated value is added in tested electricity consumption point phase line, electric current is measured in load-side and transformer low voltage leading-out terminal, that is, power end, it is whether consistent according to the difference before and after switching load observation electric current, to determine the affiliated transformer of phase line.
Description
Technical field
The present invention relates to electric power network technique fields, and in particular to a method of judge that electricity consumer becomes relationship.
Background technique
The subordinate relation of accurate judgement distribution transformer and user are always the problem of power supply enterprise, especially prominent in urban district
Out.Since urban development needs, the work of the normalizations such as road reformation, removal, brightening leads to low pressure plus mostly underground cable
Supply network variation is fast, and line adjustment, bridge joint situation are relatively conventional.To keep the subordinate relation of transformer and user very numerous
It is miscellaneous, difficulty is caused to work such as line loss, repairing, new clothes increase-volumes, also affects power supply reliability.
The work such as the platform area line loss of power supply enterprise, repairing, new clothes increase-volume, to family platform, (area electricity consumption Dian Hetai of electricity consumer becomes
The relationship of depressor, abbreviation family platform) subordinate relation requires must be accurate.And since history accumulates, urban road is transformed, bar line moves
Situations such as moving, putting cable underground causes actual family platform relationship accuracy rate not high.And the equipment such as existing general platform area identifier used
Since its technical characteristic causes to misjudge, failing to judge happens occasionally.The defect for how making up existing equipment finds out accurate family Tai Guan
System, just at the task of top priority of line loss control.
There are many drawbacks based on the mode of carrier signal for existing area's generaI investigation instrument:
1, signal is easy by force across platform, gets two or more radio stations at once, and the weak long range of signal can not receive；
2, distribution harmonic wave interference leads to indeterminacy；
3, three-phase electricity consumption user be unable to judge accurately every phase transformer ownership (need phase-connecting wire and zero curve to constitute circuit, three
Root phase line takes electricity from different transformers respectively, but zero curve only has one, leads to non-the case where taking zero curve platform area that can not measure or total
Zero logical situation).
Summary of the invention
A kind of method judging electricity consumption point phase transformation relationship proposed by the present invention, can solve existing electricity consumption point phase transformation relationship difficulty and sentence
The technical issues of determining or can not judging.
To achieve the above object, the invention adopts the following technical scheme:
A method of judging that electricity consumer becomes relationship, mutually i.e. phase line/firewire, change are transformer, and single-phase electricity consumption user is
Family becomes, the relation on attributes of three-phase electricity consumption user every phase and transformer, hereinafter referred to as phase transformation relationship；
Specific step is as follows:
S100, in the electricity consumption point for needing to judge phase transformation relationship, load the load of rated power, offered load mutually using pincers
Table monitors corresponding front and back electric current；
S200, the corresponding electricity of source side before and after split-core type meter monitoring offered load is used in transformer low voltage leading-out terminal phase line
Stream；
S300, synchronous connection (using phone or intercom), when switching nominal load, observe the variation of corresponding phase line current.
Whether the difference of electric current is equal before and after S400, foundation load-side and source side can determine whether phase transformation relationship.
As shown from the above technical solution, a kind of judgement family researched and developed and practiced out from line loss improvement of the invention becomes relationship
New method, that is, current synchronization differential technique thoroughly changes the case where existing family becomes the misjudgement of generaI investigation equipment, fails to judge.The present invention is based on electricity
The synchronism of stream is added bearing power/electric current of rated value in tested electricity consumption point, is surveyed in load-side and transformer low voltage leading-out terminal
Electric current is measured, loads the variation of the value of observation electric current, according to switching to determine the affiliated transformer of phase line.
The utility model has the advantages that
1, the present invention, which is not required to determine by power failure mode, becomes family relationship, reduces power off time, improves power supply reliability；
2, the present invention make phase transformation judgement more directly, it is accurate, avoid other carrier signal judgment mode signals by force easily string,
Signal is weak apart from short, the drawbacks of vulnerable to harmonic wave interference；
3, the present invention can also accurately judge every phase for special abnormal wiring (electricity box or a three-phase meter)
The ownership of line revolutionizes the short slab of mesh foreground partition identifier.
Detailed description of the invention
Fig. 1 is the method for the present invention flow chart；
Fig. 2 is the principle of the present invention figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
The topological relation of the practical i.e. low-voltage distribution network of family platform relationship is the physics connection powered under a transformer to how many families
System.It is to use conducting wire physical connection between electricity consumer and transformer, existing area identifies/generally investigate equipment utilization carrier wave or zero sequence
The mode of electric current is determined, higher to the ownership erroneous judgement of some difficult electricity consumption points, false determination ratio in actual use.It is embodied in
Below 3 aspect:
The carrier signal power of platform area identification equipment has a great impact to the accuracy of judgement.Signal by force be easy across platform,
It gets two or more radio stations at once, and the weak limited transmission distance of signal.
Such as；There are 2 close transformers less than 30 meters at city cell gate, in test, in 2 transformers
Place all receives the signal of electricity consumption point, determines that result does not have use value.
Distribution harmonic wave interference, influences signal, causes not detecting；
Some exception electricity consumption situations, same electricity box, same three-phase meter take electricity from 2 transformers respectively, due to current
Platform area test equipment need to pick up phase line and zero curve constitutes circuit, and more phase lines take electricity from different transformers respectively, but zero curve only has
One, lead to non-the case where taking zero curve platform area that can not measure or totally zero logical situation), it cannot accurately determine that phase line belongs to.
As shown in Figure 1, judging that electricity consumer becomes the method for relationship described in the present embodiment, include the following steps as follows:
S100, in the electricity consumption point for needing to judge phase transformation relationship, load the load of rated power, offered load mutually using pincers
Table monitors corresponding front and back electric current；
S200, the corresponding electricity of source side before and after split-core type meter monitoring offered load is used in transformer low voltage leading-out terminal phase line
Stream；
S300, synchronous connection (using phone or intercom), when switching nominal load, observe the variation of corresponding phase line current.
Whether the difference of electric current is equal before and after S400, foundation load-side and source side can determine whether phase transformation relationship.
Specific step is as follows:
S100, in the electricity consumption point for needing to judge phase transformation relationship, load the load of rated power: P, mutually used in offered load
Split-core type meter monitors corresponding front and back electric current Ir1, Ir2；
S200, the corresponding electric current of source side before and after split-core type meter monitoring offered load is used in transformer low voltage leading-out terminal phase line
Ie1,Ie2；
S300, synchronous connection (using phone or intercom), switching nominal load P observes and records corresponding load-side
Front and back switching electric current Ir1, Ir2 and source side front and back switching electric current Ie1, Ie2.
S400, load-side current differential △ Ir (△ Ir=Ir1- is calculated according to switching electric current Ir1, Ir2 before and after load-side
Ir2), source side current differential △ Ie (△ Ie=Ie1-Ie2) is calculated according to switching electric current Ie1, Ie2 before and after source side.△
Ir=△ Ie (or difference is within 5%), judges that phase transformation is consistent.It can make judgement according to on-site actual situations repeated loading more
Accurately.
The step of embodiment of the present invention, is further illustrated below with reference to Fig. 2:
S100: in the electricity consumption point for needing to judge phase transformation relationship, rated power/electric current load: P is loaded, in offered load
Prepare electric current Ir1 (after load investment, similarly hereinafter), Ir2 (the load investment of monitoring load switching correspondence in phase line using split-core type meter
Before, similarly hereinafter)；
S200: source side pair before and after split-core type meter preparation monitoring offered load switching is used in transformer low voltage leading-out terminal phase line
Electric current Ie1, the Ie2 answered；
S300: synchronous connection (using phone or intercom), switching nominal load/electric current P observe and record corresponding negative
Carry side front and back switching electric current Ir1, Ir2 and source side front and back switching electric current Ie1, Ie2.
S400: load-side current differential △ Ir (△ Ir=Ir1- is calculated according to switching electric current Ir1, Ir2 before and after load-side
Ir2), source side current differential △ Ie (△ Ie=Ie1-Ie2) is calculated according to switching electric current Ie1, Ie2 before and after source side.
It further determines:
Condition one: with the switching of load, whether the variation of electric current is synchronized, it may be assumed that variation Ir2 → Ir1 of load-side electric current
Whether the change curve from time shaft is consistent with variation Ie2 → Ie1 → Ie2 of source side electric current by → Ir2.
Condition two: with the switching of load, whether the variable quantity for observing electric current is consistent, it may be assumed that △ Ir ≈ △ Ie is (because scene is clamped
The error of table, actual error is within 2%).
2 points more than meeting, it can determine that test phase line whether physically from this transformer connection, i.e. phase transformation relationship/Hu Taiguan
System.Because in practical electricity consumption, some load variations are very fast, the time that load variations can be selected little according to on-site actual situations is clicked through
Row measurement or repeated loading can make judgement more accurate.
With the method, dividing in the improvement of platform line loss for the city Yi Wo plays extraordinary effect, solves multiple family platforms
The problem of judgement now introduces two than more typical case.
Concrete application case is as follows:
Case 1,
Somewhere street lamp table is the direct wiring of three-phase and four-line.The negative damage of affiliated transformer A line loss is unqualified, and neighbouring transformer B is just
It damages unqualified.A transformer-supplied is belonged to using table a, c phase when conventional platform area generaI investigation instrument test, b phase is without ownership.Using this reality
The current method for applying example uses the hair dryer of rated power at the table, switching repeatedly is distinguished in a, b, c three-phase respectively, using pincers
Shape ammeter observes the low-pressure line-outgoing of transformer A and B, and a, c of discovery transformer A, which accompanies, loads the variation of switching current synchronization, becomes
The b of depressor B, which accompanies, loads the variation of switching current synchronization, determines electricity consumption herein, and a, c phase take electricity from transformer A, and b phase is from transformer B
Take electricity.Before and after this example switching, the c phase phase current variation 3.3A (bar becomes critical point current transformer multiplying power 300) of transformer A →
The b phase phase current of 5.7A, switching front and back, transformer B change 0.01A → 2.59A.
It is verified repeatedly by multidisciplinary scene, is found to be road reformation, cable migration, a bar becomes and case becomes same bar, applies
Do not have when work order bit recovery wiring note that taking conductance to cause from 2 transformers respectively.
Case 2,
In the improvement of platform area line loss, the affiliated platform area line loss of pole transformer A is unstable (negative damage is in the majority).Through multiple live core
It looks into, there is the street lamp table of the direct wiring of a three-phase and four-line under platform area A, A is belonged to using table a, c phase when conventional platform area generaI investigation instrument test
Transformer-supplied, b phase (nearby have a box type transformer B, but test obstructed) without ownership.Using the method for current synchronization difference,
Rated power/electric current hair dryer is used at the table, switching repeatedly is distinguished in a, b, c three-phase respectively, using clamp on amperemeter
The low-pressure line-outgoing of transformer A is observed, a, c of discovery transformer A, which accompanies, loads the variation of switching current synchronization, and b phase is unchanged.But
The b of transformer B, which accompanies, loads the variation of switching current synchronization, and determine electricity consumption herein: a, c phase take electricity from transformer A, and b phase is from transformation
Device B takes electricity.
Concrete operation step:
Rated power load (using hair dryer) P is loaded at street lamp electricity box；△ Ie (source side loads switching front and back electric current
Difference)=3.72A.
Nominal load P is loaded using hair dryer；△ Ie=3.72A (5.76-2.04)；
C phase secondary current at transformer A after load investment: (bar becomes 120 times of critical point current transformer multiplying power to Ie1=5.76A
(600/5), 0.048*120=5.76)；
C phase secondary current at transformer A before load is put into: Ie2=2.04A (0.017*120), △ Ir are (before and after load-side
Switching current differential)=Ie1 (after load-side switching electric current)-Ie2 (before load-side switching electric current)=3.69A (Ir1=6.07,
Ir2=2.38)；
Ir2=2.38A before Ir1=6.07A load is put into after load investment；
With the switching of load, △ Ir is synchronous variation with △ Ie for field observation, meets condition one；△ Ie=3.72A
≈ △ Ir=3.69A, error is 0.8%, eligible two.Thus the c phase for judging street lamp table herein is the c phase from transformer A
Take electricity.A phase situation is identical, but b phase, with the switching of load, 3 phase currents are without corresponding change at transformer, thus obtain,
The b phase of street lamp table is not to take electricity from transformer A.
It at subsequent nigh transformer B, is detected, wherein a way switch b phase current changes for discovery:
After transformer B load investment at transformer B, b phase secondary current Ie1, before load is put at transformer B, b phase is secondary
B phase phase current Ie1=3.9A, Ie2=0.191A of electric current Ie2, transformer B, △ Ie=3.709A (3.9-0.191)；
With the switching of load, △ Ir is synchronous variation with △ Ie for field observation, meets condition one；△ Ie=3.709A
≈ △ Ir=3.69A, error is 0.5%, eligible two.Thus the b phase for judging street lamp table herein is from box type transformer B
B phase takes electricity.
It is verified repeatedly by multidisciplinary scene, is found to be road reformation, cable migration, a bar becomes and case becomes same bar, applies
Do not have when work order bit recovery wiring note that taking conductance to cause from 2 transformers respectively.
The feelings of electricity consumption point (two two transformer-supplied of three-phase meter, electricity box transformer-supplieds) multiple feed at such one
Condition verifies out many places again.
Case 3,
Certain cell, high-rise, apartment house, 8 electricity box of a floor.Using the generaI investigation instrument investigation of 2 producers, do not check
Subordinate relation out.
Using the current synchronization differential technique of the present embodiment, load is tested using the hair dryer of relatively high power:
△ Ir (switching current differential before and after load-side)=Ie1-Ie2=5.99-1.846=4.144A.
Ir2=1.846 before electric current Ir1=5.99 load is put at electricity box after load investment；
△ Ie (switching current differential before and after source side)=Ie1-Ie2=6.97-2.87=4.1A；
Ie2=2.87 before source side electric current Ie1=6.97 load is put into after load investment；
With the switching of load, △ Ir is synchronous variation with △ Ie for field observation, meets condition one；△ Ie=4.1A ≈
△ Ir=4.144A (error is 1.06%), eligible two.Thus judging this electricity box A phase, transformer A phase is powered thus.
It is tested by by phase, by electricity box, 8 electricity box of this floor are belonging respectively to 3 transformer-supplieds, i.e. 8 electricity box of same layer
Adhere to 3 areas Ge Tai separately.
To sum up, the embodiment of the present invention utilizes the synchronism of power transmission, in electricity consumption point (the following letter that need to judge family platform relationship
Claim load-side) load rated current load, observe transformer low voltage source side (hereinafter referred to as source side) curent change feelings
Condition compares the synchronism and amplitude variation consistency of load-side and source side electric current no-load voltage ratio, to determine family platform relationship.
It is compared using electric current, and not using other parameters of electric power such as power, voltages, it is due to electric current directly to measure,
It is not required to consider other parameters, the fewer the parametric variable calculated the better, and such data can more directly, accurately.And power is
The product of voltage, electric current and power factor (PF) is an indirect amount, and Variable Factors are more；And voltage by load switching, Resistance Influence compared with
Greatly, uncontrollable factor is more, therefore it is more practical and accurate for being compared using electric current.
By the practical application at scene, " the current synchronization differential technique " of the embodiment of the present invention is quasi- to the judgement in difficult platform area
True, operation is easy to be intuitive.Especially determine family platform, has further determined to phase transformation, more accurately directly sentence
The subordinate relation of phase line is made, not only plays the role of good can also checking that wiring is asked for the combing of the family Tai Qu platform relationship
Topic.In practice, it tries every possible means more, the platform area that such as test distributed photovoltaic accesses at night；According to resident, the spy of commercial power
Point, use of avoiding the peak hour, flexible utilization can make application range wider, more accurate.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of method that judgement electricity consumer becomes relationship, it is characterised in that: the following steps are included:
S100, in the electricity consumption point for needing to judge phase transformation relationship, load the load of rated power, offered load mutually monitor front and back electricity
Stream；
S200, the corresponding electric current of source side before and after transformer low voltage leading-out terminal phase on-line monitoring offered load；
S300, synchronous connection load-side and source side, and observe load-side and source side difference respectively in switching nominal load
The variation of corresponding phase line current；
Whether the difference of electric current is equal before and after S400, foundation load-side and source side can determine whether electricity consumption phase transformation relationship.
2. the method that judgement electricity consumer according to claim 1 becomes relationship, it is characterised in that: judge in the step S400
Electricity consumption phase transformation relationship, comprising:
Whether the change curve from time shaft is consistent with the variation of source side electric current for the variation of S401, observation load-side electric current；
Whether S402, the switching with load, the variable quantity for observing electric current are consistent；
S403, according to step S401 and S402, discriminating test phase line whether physically from this transformer connection, that is, determine electricity consumer
Change relationship.
3. the method that judgement electricity consumer according to claim 1 becomes relationship, it is characterised in that: adding in the step S100
It loads with and mutually monitors front and back electric current using split-core type meter.
4. the method that judgement electricity consumer according to claim 1 becomes relationship, it is characterised in that: the step S200 is in transformation
The corresponding electric current of source side before and after split-core type meter monitoring offered load is used in the phase line of device low-pressure line-outgoing end.
5. the method that judgement electricity consumer according to claim 1 becomes relationship, it is characterised in that: synchronous in the step 300
Even if contacting phone or intercom connection.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531155A (en) * | 2019-09-10 | 2019-12-03 | 中国电力科学研究院有限公司 | A kind of switching resistance signal generation method and system becoming relation recognition for family |
| CN110646690A (en) * | 2019-09-10 | 2020-01-03 | 国网浙江省电力有限公司电力科学研究院 | Method and system for identifying user variation relationship based on characteristic current signal |
| CN110658386A (en) * | 2019-09-10 | 2020-01-07 | 国网浙江省电力有限公司电力科学研究院 | Capacitance switching-based household variable relation identification method and system |
| CN110658397A (en) * | 2019-09-10 | 2020-01-07 | 国网浙江省电力有限公司 | Method and system for identifying user variable relationship based on resistance switching and frequency domain analysis |
| CN111103498A (en) * | 2019-11-05 | 2020-05-05 | 深圳供电局有限公司 | Low-voltage transformer area line-changing user relation identification system and method |
| CN112099838A (en) * | 2019-06-17 | 2020-12-18 | 腾讯科技（深圳）有限公司 | Method, device and storage medium for determining version difference |
| CN113392414A (en) * | 2021-05-27 | 2021-09-14 | 国网福建省电力有限公司营销服务中心 | Closed-loop checking method for household variable relationship of power station area based on station area identifier |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8461823B2 (en) * | 2007-07-13 | 2013-06-11 | Grid2020, Inc. | System for metering electricity by integrating in-phase current |
| WO2013176629A1 (en) * | 2012-05-22 | 2013-11-28 | Nela Razvojni Center Za Elektroindustrijo In Elektroniko D.O.O. | Electric circuit overload protecting device with integrated electricity consumption meter |
| CN103559580A (en) * | 2013-11-05 | 2014-02-05 | 国家电网公司 | Power distribution network analysis system and method |
| CN104316816A (en) * | 2014-10-09 | 2015-01-28 | 国家电网公司 | Single-phase residential energy meter missort checking method |
| CN204408017U (en) * | 2015-01-17 | 2015-06-17 | 保定市博达同创电力科技有限公司 | A kind of area user identification zone device |
| CN105098985A (en) * | 2015-08-21 | 2015-11-25 | 光一科技股份有限公司 | System and method for identifying user change relationships in low-voltage power distribution based on power-frequency voltage distortion |
| CN105891613A (en) * | 2014-11-19 | 2016-08-24 | 国家电网公司 | Method for measuring phase sequence of power transmission line by using power frequency parameter tester |
| US9996100B2 (en) * | 2015-09-15 | 2018-06-12 | Samsung Electronics Co., Ltd. | Current reference circuit and semiconductor integrated circuit including the same |
| CN207603241U (en) * | 2017-10-17 | 2018-07-10 | 西安闻泰电子科技有限公司 | Discharging device |
| CN207637296U (en) * | 2017-12-14 | 2018-07-20 | 国网北京市电力公司 | Family becomes the test device of relationship identification system |
| CN108414886A (en) * | 2018-01-11 | 2018-08-17 | 国网江苏省电力有限公司连云港供电分公司 | A kind of mutual table method of power distribution network |
| CN108535599A (en) * | 2018-04-16 | 2018-09-14 | 国网河南省电力公司电力科学研究院 | Low-voltage platform area user's phase recognition methods based on voltage curve clustering |
-
2019
- 2019-01-08 CN CN201910015223.8A patent/CN109782090B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8461823B2 (en) * | 2007-07-13 | 2013-06-11 | Grid2020, Inc. | System for metering electricity by integrating in-phase current |
| WO2013176629A1 (en) * | 2012-05-22 | 2013-11-28 | Nela Razvojni Center Za Elektroindustrijo In Elektroniko D.O.O. | Electric circuit overload protecting device with integrated electricity consumption meter |
| CN103559580A (en) * | 2013-11-05 | 2014-02-05 | 国家电网公司 | Power distribution network analysis system and method |
| CN104316816A (en) * | 2014-10-09 | 2015-01-28 | 国家电网公司 | Single-phase residential energy meter missort checking method |
| CN105891613A (en) * | 2014-11-19 | 2016-08-24 | 国家电网公司 | Method for measuring phase sequence of power transmission line by using power frequency parameter tester |
| CN204408017U (en) * | 2015-01-17 | 2015-06-17 | 保定市博达同创电力科技有限公司 | A kind of area user identification zone device |
| CN105098985A (en) * | 2015-08-21 | 2015-11-25 | 光一科技股份有限公司 | System and method for identifying user change relationships in low-voltage power distribution based on power-frequency voltage distortion |
| US9996100B2 (en) * | 2015-09-15 | 2018-06-12 | Samsung Electronics Co., Ltd. | Current reference circuit and semiconductor integrated circuit including the same |
| CN207603241U (en) * | 2017-10-17 | 2018-07-10 | 西安闻泰电子科技有限公司 | Discharging device |
| CN207637296U (en) * | 2017-12-14 | 2018-07-20 | 国网北京市电力公司 | Family becomes the test device of relationship identification system |
| CN108414886A (en) * | 2018-01-11 | 2018-08-17 | 国网江苏省电力有限公司连云港供电分公司 | A kind of mutual table method of power distribution network |
| CN108535599A (en) * | 2018-04-16 | 2018-09-14 | 国网河南省电力公司电力科学研究院 | Low-voltage platform area user's phase recognition methods based on voltage curve clustering |
Non-Patent Citations (3)
| Title |
|---|
| 李源林 等: "顾及空间约束的户变关系识别与调整方法", 《电脑知识与技术》 * |
| 王鹏 等: "配用电数据分析及应用", 《电网技术》 * |
| 郑美春: "瞬时停电法在台区户变关系排查中的应用", 《企业导报》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099838A (en) * | 2019-06-17 | 2020-12-18 | 腾讯科技（深圳）有限公司 | Method, device and storage medium for determining version difference |
| CN112099838B (en) * | 2019-06-17 | 2023-08-15 | 腾讯科技（深圳）有限公司 | Method, device and storage medium for determining version difference |
| CN110658397B (en) * | 2019-09-10 | 2022-04-15 | 国网浙江省电力有限公司 | Method and system for identifying user variable relationship based on resistance switching and frequency domain analysis |
| CN110658397A (en) * | 2019-09-10 | 2020-01-07 | 国网浙江省电力有限公司 | Method and system for identifying user variable relationship based on resistance switching and frequency domain analysis |
| CN110658386A (en) * | 2019-09-10 | 2020-01-07 | 国网浙江省电力有限公司电力科学研究院 | Capacitance switching-based household variable relation identification method and system |
| CN110646690B (en) * | 2019-09-10 | 2022-01-21 | 国网浙江省电力有限公司营销服务中心 | Method and system for identifying user variation relationship based on characteristic current signal |
| CN110658386B (en) * | 2019-09-10 | 2022-04-15 | 国网浙江省电力有限公司营销服务中心 | Capacitance switching-based household variable relation identification method and system |
| CN110531155A (en) * | 2019-09-10 | 2019-12-03 | 中国电力科学研究院有限公司 | A kind of switching resistance signal generation method and system becoming relation recognition for family |
| CN110531155B (en) * | 2019-09-10 | 2022-06-28 | 中国电力科学研究院有限公司 | Switching resistance signal generation method and system for identifying user variable relationship |
| CN110646690A (en) * | 2019-09-10 | 2020-01-03 | 国网浙江省电力有限公司电力科学研究院 | Method and system for identifying user variation relationship based on characteristic current signal |
| CN111103498A (en) * | 2019-11-05 | 2020-05-05 | 深圳供电局有限公司 | Low-voltage transformer area line-changing user relation identification system and method |
| CN113392414A (en) * | 2021-05-27 | 2021-09-14 | 国网福建省电力有限公司营销服务中心 | Closed-loop checking method for household variable relationship of power station area based on station area identifier |
| CN113392414B (en) * | 2021-05-27 | 2023-04-11 | 国网福建省电力有限公司营销服务中心 | Closed-loop checking method for household variable relationship of power station area based on station area identifier |
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