CN109991512A - Based on the synchronous low-tension distribution box user's phase big data discrimination method of sudden load change - Google Patents
Based on the synchronous low-tension distribution box user's phase big data discrimination method of sudden load change Download PDFInfo
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Abstract
The invention discloses the low-tension distribution box user phase big data discrimination method synchronous based on sudden load change, power information collector first carries out periodic sampling and preservation to three-phase electricity flow valuve；In power information collector operational process, if receiving " current break sync check " communication message of single-phase electric energy meter upload, three-phase current changing value is calculated separately out；A phase, B phase and C phase three-phase current changing value are analyzed, the phase information of single-phase electric energy meter is obtained.The present invention under the premise of not having a power failure, can realize the phase information identification of low-voltage power distribution station area user single-phase meter.
Description
Technical field
The invention belongs to technical field of electric power, and in particular to big based on the synchronous low-tension distribution box user's phase of sudden load change
Data identification method.
Background technique
Continuous improvement and power information acquisition system strengthened research with Utilities Electric Co.'s marketing system level of informatization
The continuous proposition of new demand, in order to preferably service vast power consumer, Utilities Electric Co. needs to acquire low-voltage power distribution station area user
The phase information of single-phase meter generally carries out phase-detection by power failure mode in the prior art, but this method will affect user's
Daily life, while the waste that will also result in manpower and material resources is respectively processed to each power distribution station.
Summary of the invention
To solve the above problems, the present invention proposes a kind of low-tension distribution box user phase big number synchronous based on sudden load change
According to discrimination method, under the premise of not having a power failure, the phase information identification of low-voltage power distribution station area user single-phase meter is realized.
The present invention adopts the following technical scheme that, based on the synchronous low-tension distribution box user's phase big data identification of sudden load change
Method, comprising the following steps:
S1: power information collector carries out periodic sampling and preservation to three-phase electricity flow valuve；
S2: in power information collector operational process, if receiving " the synchronous inspection of current break of single-phase electric energy meter upload
Look into " communication message, then calculate separately out three-phase current changing value；
S3: analysis A phase, B phase and C phase three-phase current changing value obtain the phase information of single-phase electric energy meter.
Preferably, in the step S2 single-phase electric energy meter upload " current break sync check " communication message specific steps
It is as follows:
21) single-phase electric energy meter carries out periodic sampling and preservation to single-phase electricity flow valuve；
22) calculating current changing value Iscd and curent change percentage Iscp judges that current variation value Iscd and electric current become
Change whether percentage Iscp meets preset condition, if meeting preset condition, uploads " electric current to affiliated power information collector
It is mutated sync check " communication message.
Preferably, calculating current changing value described in the step 22) and curent change percentage ratio method are as follows:
Current variation value Iscd=| Icur-Ipre |；
Curent change percentage Iscp=(Iscd/Ipre) * 100%；
Wherein, Icur indicates current single-phase electricity flow valuve, and Ipre indicates previous cycle single-phase electricity flow valuve.
Preferably, judge whether current variation value Iscd and curent change percentage Iscp is full described in the step 22)
The method of sufficient preset condition specifically:
Condition one: Iscd >=SCD, wherein SCD indicates current break value limit value；
Condition two: Iscp >=SCP, wherein SCP indicates current break percentage limit；
If meeting condition one or condition two, judgement meets preset condition, uploads " electricity to affiliated power information collector
Stream mutation sync check " communication message.
Preferably, three-phase current changing value described in the step S2 is the mechanical periodicity value of three-phase current, specific to calculate
Method is as follows:
A phase current changing value A_Iscd=| A_Icur-A_Ipre |；
B phase current changing value B_Iscd=| B_Icur-B_Ipre |；
C phase current changing value C_Iscd=| C_Icur-C_Ipre |；
Wherein A_Icur, B_Icur and C_Icur are respectively current A phase current values, B phase current values and C phase current values, A_
Ipre, B_Ipre and C_Ipre are respectively previous cycle A phase current values, B phase current values and C phase current values.
Preferably, the specific method is as follows by the step S3:
Analyze A phase current changing value:
Condition one: | A_Iscd-Iscd |≤MOE
Two: B_Iscd≤MOE of condition
Three: C_Iscd≤MOE of condition
Wherein MOE indicates that deviation limit value, A_Iscd, B_Iscd respectively indicate A phase current changing value, B phase electricity with C_Iscd
Changing value and C phase current changing value are flowed, Iscd indicates the current variation value in single-phase electric energy meter；
If meeting above three condition simultaneously, by the credible counter AdrX_A_ of single-phase electric energy meter AdrX corresponding A phase
TC adds 1, while maintaining the credible counter AdrX_B_TC of corresponding B-phase, corresponding to the credible counter AdrX_C_TC of C phase not
Become；
B phase current changing value and C phase current changing value are analyzed according to the above method；
Judge whether the credible counter AdrX_A_TC of single-phase electric energy meter AdrX corresponding A phase meets the following conditions:
Condition one: AdrX_A_TC >=AdrX_B_TC+TC
Condition two: AdrX_A_TC >=AdrX_C_TC+TC
Wherein, TC indicates credible counter set point；
If meeting above-mentioned two condition simultaneously, judge single-phase electric energy meter AdrX in A phase；
Single-phase electric energy meter AdrX corresponds to B-phase, C phase is recognized according to the above method.
Preferably, the phase information for the single-phase electric energy meter that the step S3 is obtained is uploaded to electricity consumption by GPRS communication module
Information collection main website.
Invent achieved the utility model has the advantages that the present invention is a kind of low-tension distribution box user phase synchronous based on sudden load change
Big data discrimination method realizes the phase information identification of low-voltage power distribution station area user single-phase meter under the premise of not having a power failure.This hair
It is bright to be deployed in pressure common distribution box, it is automatic to recognize single-phase meter phase information by big data acquisition and analytical technology, more preferably
Ground meets the new demand of power information acquisition system strengthened research, can further promote electric service level.
Detailed description of the invention
A kind of low-tension distribution box internal unit schematic diagram of Fig. 1 embodiment of the present invention；
A kind of single-phase electric energy meter schematic diagram of internal structure of Fig. 2 embodiment of the present invention；
A kind of power information collector schematic diagram of internal structure of Fig. 3 embodiment of the present invention；
A kind of single-phase electric energy meter workflow schematic diagram of Fig. 4 embodiment of the present invention；
A kind of power information collector workflow schematic diagram of Fig. 5 embodiment of the present invention；
The phase discrimination method flow chart of the middle A phase of Fig. 6 embodiment of the present invention.
Specific embodiment
Below according to attached drawing and technical solution of the present invention is further elaborated in conjunction with the embodiments.
Equipment in low-tension distribution box includes: a power information collector and several single-phase electric energy meters, power information
Collector communicated by RS485 communication line and micropower wireless mode and single-phase electric energy meter, by power information from
Dynamic acquisition and data analysis, realize the automatic identifying function of user's phase, structure is as shown in Figure 1.
Single-phase electric energy meter includes: main processor modules, single-phase measurement module, memory module, RS485 communication module, micro- function
Rate wireless communication module and clock module.Wherein, single-phase measurement module, memory module, RS485 communication module, micropower is wireless
Communication module and clock module are connected with main processor modules respectively, under main processor modules control, pass through single-phase measurement mould
Block measures Monophase electric power information, obtains current time information by clock module, stores Monophase electric power information by memory module,
Monophase electric power information is transmitted to power information collector by RS485 communication module and micropower wireless communication module, is needed
Bright, each functional module has corresponding chip that above-mentioned function may be implemented, and structure is as shown in Figure 2.
Power information collector includes main processor modules, three phase metering module, memory module, RS485 communication module, micro-
Power wireless communications module, GPRS communication module and clock module.Wherein, three phase metering module, memory module, RS485 communication
Module, micropower wireless communication module, GPRS communication module and clock module are connected with main processor modules respectively, in main process task
Under the control of device module, by three phase metering module metering three-phase power information, current time information is obtained by clock module, is led to
Memory module storage three-phase power information is crossed, single-phase electric energy is received by RS485 communication module and micropower wireless communication module
The Monophase electric power information of table transmission acquires main website by GPRS communication module upload user phase information to power information.It needs
Illustrate, each functional module has corresponding chip that above-mentioned function may be implemented, and structure is as shown in Figure 3.
Embodiment 1
Based on the synchronous low-tension distribution box user's phase big data discrimination method of sudden load change, as shown in figure 4, specific steps
It is as follows:
S1: power information collector carries out periodic sampling and preservation to three-phase electricity flow valuve；The period is 1 second；
S2: in power information collector operational process, if receiving " the synchronous inspection of current break of single-phase electric energy meter upload
Look into " communication message, then calculate separately out three-phase current changing value；
S3: analysis A phase, B phase and C phase three-phase current changing value obtain the phase information of single-phase electric energy meter.
Embodiment 2
On the basis of embodiment 1, single-phase electric energy meter uploads method such as Fig. 5 of " current break sync check " communication message
It is shown, i.e. the workflow of single-phase electric energy meter, the specific steps are as follows:
21) on single-phase electric energy meter AdrX after electricity operation, periodic sampling and preservation are carried out to single-phase electricity flow valuve；The period is
1 second；
22) calculating current changing value Iscd and curent change percentage Iscp judges that current variation value Iscd and electric current become
Change whether percentage Iscp meets preset condition, if meeting preset condition, uploads " electric current to affiliated power information collector
It is mutated sync check " communication message.
As a kind of preferred embodiment, the calculating current changing value Iscd and curent change percentage Iscp method are such as
Under:
Current variation value Iscd=| Icur-Ipre |；
Curent change percentage Iscp=(Iscd/Ipre) * 100%；
Wherein, Icur indicates current single-phase electricity flow valuve, and Ipre indicates previous cycle single-phase electricity flow valuve.
It is described to judge whether current variation value Iscd and curent change percentage Iscp is full as a kind of preferred embodiment
Sufficient preset condition specifically:
Condition one: Iscd >=SCD, wherein SCD indicates current break value limit value, value 1.0A；
Condition two: Iscp >=SCP, wherein SCP indicates current break percentage limit, value 20%；
If meeting condition one or condition two, judgement meets preset condition, uploads " electricity to affiliated power information collector
Stream mutation sync check " communication message.
As a kind of preferred embodiment, three-phase current changing value is the mechanical periodicity of three-phase current in the step S2
Value, circular are as follows:
A phase current changing value A_Iscd=| A_Icur-A_Ipre |；
B phase current changing value B_Iscd=| B_Icur-B_Ipre |；
C phase current changing value C_Iscd=| C_Icur-C_Ipre |；
Wherein A_Icur, B_Icur and C_Icur are respectively current A phase current values, B phase current values and C phase current values, A_
Ipre, B_Ipre and C_Ipre are respectively previous cycle A phase current values, B phase current values and C phase current values.
As a kind of preferred embodiment, the specific method is as follows by the step S3:
As shown in fig. 6, analysis A phase current changing value:
Condition one: | A_Iscd-Iscd |≤MOE
Two: B_Iscd≤MOE of condition
Three: C_Iscd≤MOE of condition
Wherein, MOE indicates deviation limit value, and value 0.1A, Iscd indicates the current variation value in single-phase electric energy meter, by single-phase
Electric energy meter is uploaded in affiliated electricity consumption collector；If meeting above three condition simultaneously, by single-phase electric energy meter AdrX corresponding A
The credible counter AdrX_A_TC of phase adds 1, while maintaining the credible counter AdrX_B_TC of corresponding B-phase, corresponding C phase
Credible counter AdrX_C_TC it is constant.
B phase current changing value and C phase current changing value are analyzed according to the above method.
Judge whether the credible counter AdrX_A_TC of single-phase electric energy meter AdrX corresponding A phase meets the following conditions:
Condition one: AdrX_A_TC >=AdrX_B_TC+TC
Condition two: AdrX_A_TC >=AdrX_C_TC+TC
Wherein, TC indicates credible counter set point, is set as 100；
If meeting above-mentioned two condition simultaneously, single-phase electric energy meter AdrX is high in the confidence level of A phase, judges single-phase electricity
Energy Table A drX is uploaded to power information by GPRS communication module and acquires main website in A phase, completes low-tension distribution box user phase
The discriminating function of position.Single-phase electric energy meter AdrX is recognized in the same way in B, C phase.
The foregoing is merely the preferred embodiment of the present invention, to illustrate technical solution of the present invention, rather than limit it
System；It is noted that, modifying the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out
Equivalent 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 (7)
1. based on the synchronous low-tension distribution box user's phase big data discrimination method of sudden load change, which is characterized in that including following
Step:
S1: power information collector carries out periodic sampling and preservation to three-phase electricity flow valuve；
S2: in power information collector operational process, if " the current break sync check " that receives single-phase electric energy meter upload is logical
Believe message, then calculates separately out three-phase current changing value；
S3: analysis A phase, B phase and C phase three-phase current changing value obtain the phase information of single-phase electric energy meter.
2. the low-tension distribution box user phase big data discrimination method synchronous based on sudden load change according to claim 1,
It is characterized in that, single-phase electric energy meter uploads the specific steps of " current break sync check " communication message such as in the step S2
Under:
21) single-phase electric energy meter carries out periodic sampling and preservation to single-phase electricity flow valuve；
22) calculating current changing value Iscd and curent change percentage Iscp, judges current variation value Iscd and curent change hundred
Divide and whether meet preset condition than Iscp, if meeting preset condition, uploads " current break to affiliated power information collector
Sync check " communication message.
3. the low-tension distribution box user phase big data discrimination method synchronous based on sudden load change according to claim 2,
It is characterized in that, calculating current changing value described in the step 22) and curent change percentage ratio method are as follows:
Current variation value Iscd=| Icur-Ipre |；
Curent change percentage Iscp=(Iscd/Ipre) * 100%；
Wherein, Icur indicates current single-phase electricity flow valuve, and Ipre indicates previous cycle single-phase electricity flow valuve.
4. the low-tension distribution box user phase big data discrimination method synchronous based on sudden load change according to claim 2,
It is characterized in that, it is pre- to judge whether current variation value Iscd and curent change percentage Iscp meet described in the step 22)
If the method for condition specifically:
Condition one: Iscd >=SCD, wherein SCD indicates current break value limit value；
Condition two: Iscp >=SCP, wherein SCP indicates current break percentage limit；
If meeting condition one or condition two, judgement meets preset condition, and to affiliated power information collector upload, " electric current is prominent
Become sync check " communication message.
5. the low-tension distribution box user phase big data discrimination method synchronous based on sudden load change according to claim 1,
It is characterized in that, three-phase current changing value described in the step S2 is the mechanical periodicity value of three-phase current, circular
It is as follows:
A phase current changing value A_Iscd=| A_Icur-A_Ipre |；
B phase current changing value B_Iscd=| B_Icur-B_Ipre |；
C phase current changing value C_Iscd=| C_Icur-C_Ipre |；
Wherein A_Icur, B_Icur and C_Icur are respectively current A phase current values, B phase current values and C phase current values, A_Ipre,
B_Ipre and C_Ipre is respectively previous cycle A phase current values, B phase current values and C phase current values.
6. the low-tension distribution box user phase big data discrimination method synchronous based on sudden load change according to claim 1,
It is characterized in that, the specific method is as follows by the step S3:
Analyze A phase current changing value:
Condition one: | A_Iscd-Iscd |≤MOE
Two: B_Iscd≤MOE of condition
Three: C_Iscd≤MOE of condition
Wherein MOE indicates deviation limit value, and A_Iscd, B_Iscd and C_Iscd respectively indicate A phase current changing value, B phase current becomes
Change value and C phase current changing value, Iscd indicate the current variation value in single-phase electric energy meter；
If meeting above three condition simultaneously, the credible counter AdrX_A_TC of single-phase electric energy meter AdrX corresponding A phase is added
1, while maintaining the credible counter AdrX_B_TC of corresponding B-phase, the credible counter AdrX_C_TC of corresponding C phase constant；
B phase current changing value and C phase current changing value are analyzed according to the above method；
Judge whether the credible counter AdrX_A_TC of single-phase electric energy meter AdrX corresponding A phase meets the following conditions:
Condition one: AdrX_A_TC >=AdrX_B_TC+TC
Condition two: AdrX_A_TC >=AdrX_C_TC+TC
Wherein, TC indicates credible counter set point；
If meeting above-mentioned two condition simultaneously, judge single-phase electric energy meter AdrX in A phase；
Single-phase electric energy meter AdrX corresponds to B-phase, C phase is recognized according to the above method.
7. the low-tension distribution box user phase big data discrimination method synchronous based on sudden load change according to claim 1,
It is characterized in that, the phase information for the single-phase electric energy meter that the step S3 is obtained is uploaded to power information by GPRS communication module
Acquire main website.
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| CN113484689A (en) * | 2021-07-22 | 2021-10-08 | 云南电网有限责任公司昆明供电局 | Distribution network fault studying and judging method and system based on feeder line current sudden reduction degree and switch load ratio probability density |
| CN113804966A (en) * | 2021-09-15 | 2021-12-17 | 江苏方天电力技术有限公司 | Electric energy meter access phase identification system and identification method |
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| CN113484689A (en) * | 2021-07-22 | 2021-10-08 | 云南电网有限责任公司昆明供电局 | Distribution network fault studying and judging method and system based on feeder line current sudden reduction degree and switch load ratio probability density |
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