CN109307790A - A kind of method and system of pair of high pressure three-phase electric energy metering synchronized sampling - Google Patents
A kind of method and system of pair of high pressure three-phase electric energy metering synchronized sampling Download PDFInfo
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- CN109307790A CN109307790A CN201811250068.XA CN201811250068A CN109307790A CN 109307790 A CN109307790 A CN 109307790A CN 201811250068 A CN201811250068 A CN 201811250068A CN 109307790 A CN109307790 A CN 109307790A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
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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
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- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Measuring Phase Differences (AREA)
Abstract
The invention discloses the method and system of a kind of pair of high pressure three-phase electric energy metering synchronized sampling, belong to high-voltage electric energy measurement field.The method of the present invention comprises determining that high pressure three-phase line voltage AB phase zero crossing TAFor the first sampling point of high pressure three-phase line voltage A member, high pressure three-phase line voltage CB phase zero crossing TCFor the first sampling point of high pressure three-phase line voltage C member；Determine the inverse of high pressure three-phase voltage line frequency f as sampling period T；Determine that high pressure three-phase line voltage A metadata synchronous start point is TAIt is T with high pressure three-phase phase voltage C metadata synchronous start pointC+ T/6, to high pressure three-phase electric energy metering synchronized sampling.The present invention solves the problems, such as binary method separate structure high pressure three-phase electric energy metering device sample-synchronous.
Description
Technical field
The present invention relates to high-voltage electric energy measurement fields, and same more particularly, to a kind of pair of high pressure three-phase electric energy metering
Walk the method and system of sampling.
Background technique
For three-phase electric energy metering, there are binary method and ternary method inside low-voltage metering equipment.It is existing due to pressure resistance
The direct measuring equipment of high pressure three-phase (6kV-35kV) be all usually binary method, or be called double original part methods meterings.A member and C
The electric energy that member measures this phase respectively passes through data communication again, and total electric energy is comprehensive.
And existing high pressure measurement sampling is necessarily dependent upon communication just to guarantee the synchronism of binary data.Have plenty of and passes through
Fiber optic communication has plenty of by wireless communication.
But once communication link receives interference or is damaged, then the synchronism for measuring sampling just not can guarantee.
Summary of the invention
The present invention is very dependent on communication to solve the problems, such as that high pressure dosing apparatus (6kV-35kV) data sampling synchronizes,
The invention proposes the method for a kind of pair of high pressure three-phase electric energy metering synchronized sampling, the method for the present invention includes:
Determine high pressure three-phase line voltage AB phase zero crossing TAFor the first sampling point of high pressure three-phase line voltage A member, high pressure three
Phases line voltage CB phase zero crossing TCFor the first sampling point of high pressure three-phase line voltage C member；
Determine the inverse of high pressure three-phase voltage line frequency f as sampling period T；
Determine the same T of high pressure three-phase line voltage A metadata synchronous start pointAWith high pressure three-phase line voltage C metadata synchronization onwards
Initial point is TC+ T/6, to high pressure three-phase electric energy metering synchronized sampling.
Optionally, method further include: determine that the synchronous of high pressure three-phase line voltage A member calculates point are as follows: T0+k/f+TA。
Optionally, method further include: determine that the synchronous of high pressure three-phase line voltage C member calculates point are as follows: T0+k/f+TC+6/f。
The invention also provides the system of a kind of pair of high pressure three-phase electric energy metering synchronized sampling, present system includes:
It determines first sampling point module: determining high pressure three-phase line voltage AB phase zero crossing TAFor high pressure three-phase line voltage A member
First sampling point, high pressure three-phase line voltage CB phase zero crossing TCFor the first sampling point of high pressure three-phase line voltage C member；
It determines cycle module: determining the inverse of high pressure three-phase voltage line frequency f as sampling period T；
Synchronized sampling module: the same T of high pressure three-phase line voltage A metadata synchronous start point is determinedAWith high pressure three-phase line voltage C
Metadata synchronous start point is TC+ T/6, to high pressure three-phase electric energy metering synchronized sampling.
Optionally, system further include: determine that the synchronous of A member calculates point module: determining the synchronization of high pressure three-phase line voltage A member
Calculate point are as follows: T0+k/f+TA。
Optionally, system further include: determine that the synchronous of C member calculates point module: determining the synchronization of high pressure three-phase line voltage C member
Calculate point are as follows: T0+k/f+TC+6/f。
The present invention solves the problems, such as binary method separate structure high pressure three-phase electric energy metering device sample-synchronous.
Detailed description of the invention
Fig. 1 is the method flow diagram of a kind of pair of high pressure three-phase electric energy metering synchronized sampling of the invention；
Fig. 2 is the system construction drawing of a kind of pair of high pressure three-phase electric energy metering synchronized sampling of the invention.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
The present invention provides the method for a kind of pair of high pressure three-phase electric energy metering synchronized sampling, as shown in Figure 1, method includes:
Determine high pressure three-phase line voltage AB phase zero crossing TAFor the first sampling point of high pressure three-phase line voltage A member, high pressure three
Phases line voltage CB phase zero crossing TCFor the first sampling point of high pressure three-phase line voltage C member；
Determine the inverse of high pressure three-phase voltage line frequency f as sampling period T；
Determine the same T of high pressure three-phase line voltage A metadata synchronous start pointAWith high pressure three-phase line voltage C metadata synchronization onwards
Initial point is TC+ T/6, to high pressure three-phase electric energy metering synchronized sampling.
Determine that the synchronous of high pressure three-phase line voltage A member calculates point are as follows: T0+k/f+TA。
Determine that the synchronous of high pressure three-phase line voltage C member calculates point are as follows: T0+k/f+TC+6/f。
The present invention also provides the systems 200 of a kind of pair of high pressure three-phase electric energy metering synchronized sampling, as shown in Fig. 2, system packet
It includes:
It determines first sampling point module 201: determining high pressure three-phase line voltage AB phase zero crossing TAFor high pressure three-phase phase voltage A
The first sampling point of member, high pressure three-phase line voltage CB phase zero crossing TCFor the first sampling point of high pressure three-phase phase voltage C member；
It determines cycle module 202: determining the inverse of high pressure three-phase phase voltage line frequency f as sampling period T；
Synchronized sampling module 203: the same T of high pressure three-phase line voltage A metadata synchronous start point is determinedAWith high pressure triple line electricity
Pressure C metadata synchronous start point is TC+ T/6, to high pressure three-phase electric energy metering synchronized sampling.
It determines that the synchronous of A member calculates point module 204: determining that the synchronous of high pressure three-phase line voltage A member calculates point are as follows: T0+k/f
+TA。
It determines that the synchronous of C member calculates point module 205: determining that the synchronous of high pressure three-phase line voltage C member calculates point are as follows: T0+k/f
+TC+6/f。
The present invention solves the problems, such as binary method separate structure high pressure three-phase electric energy metering device sample-synchronous.
Claims (6)
1. the method for a kind of pair of high pressure three-phase electric energy metering synchronized sampling, which comprises
Determine high pressure three-phase line voltage AB phase zero crossing TAFor the first sampling point of high pressure three-phase line voltage A member, high pressure triple line electricity
Press CB phase zero crossing TCFor the first sampling point of high pressure three-phase line voltage C member；
Determine the inverse of high pressure three-phase voltage line frequency f as sampling period T；
Determine that high pressure three-phase line voltage A metadata synchronous start point is TAIt is with high pressure three-phase phase voltage C metadata synchronous start point
TC+ T/6, to high pressure three-phase electric energy metering synchronized sampling.
2. according to the method described in claim 1, the method further include: determine the synchronometer of high pressure three-phase line voltage A member
Calculate point are as follows: T0+k/f+TA。
3. according to the method described in claim 1, the method further include: determine the synchronometer of high pressure three-phase line voltage C member
Calculate point are as follows: T0+k/f+TC+6/f。
4. the system of a kind of pair of high pressure three-phase electric energy metering synchronized sampling, the system comprises:
It determines first sampling point module: determining high pressure three-phase line voltage AB phase zero crossing TAFor the sampling of high pressure three-phase line voltage A member
Starting point, high pressure three-phase line voltage CB phase zero crossing TCFor the first sampling point of high pressure three-phase line voltage C member；
It determines cycle module: determining the inverse of high pressure three-phase voltage line frequency f as sampling period T；
Synchronized sampling module: determine that high pressure three-phase line voltage A metadata synchronous start point is TAWith high pressure three-phase line voltage C member number
It is T according to synchronous start pointC+ T/6, to high pressure three-phase electric energy metering synchronized sampling.
5. system according to claim 7, the system further include: determine that the synchronous of A member calculates point module: determining high
The synchronous of three-phase line voltage A member is pressed to calculate point are as follows: T0+k/f+TA。
6. system according to claim 6, the system further include: determine that the synchronous of C member calculates point module: determining high
The synchronous of three-phase phase voltage C member is pressed to calculate point are as follows: T0+k/f+TC+6/f。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250068.XA CN109307790B (en) | 2018-10-25 | 2018-10-25 | Method and system for metering and synchronously sampling high-voltage three-phase electric energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250068.XA CN109307790B (en) | 2018-10-25 | 2018-10-25 | Method and system for metering and synchronously sampling high-voltage three-phase electric energy |
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| CN109307790A true CN109307790A (en) | 2019-02-05 |
| CN109307790B CN109307790B (en) | 2022-07-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456174A (en) * | 2019-08-16 | 2019-11-15 | 智洋创新科技股份有限公司 | Three-phase synchronous method and system based on crystal oscillator ratio clock synchronization |
| CN112104004A (en) * | 2020-09-08 | 2020-12-18 | 南通大学 | Voltage signal synchronous detection method for new energy power generation grid-connected control |
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| DE2800843A1 (en) * | 1978-01-10 | 1979-07-12 | Struever Kg Ad | Mains failure monitor used with three=phase sync. machine - has transformer between star point and neutral and frequency relay detecting voltage zero crossings for signalling too low frequency |
| JP2000200467A (en) * | 1999-01-07 | 2000-07-18 | Matsushita Electric Ind Co Ltd | Digital phase-locked loop circuit |
| KR20080048132A (en) * | 2006-11-28 | 2008-06-02 | 송종환 | Synchroning operation of distributed resource connecting to single phase ac power grid |
| CN105675953A (en) * | 2015-12-15 | 2016-06-15 | 国网山西省电力公司电力科学研究院 | Quasi-synchronization measuring method based on zero-crossing detection for power transmission line both-end voltage instantaneous voltage |
| CN108152677A (en) * | 2017-12-22 | 2018-06-12 | 威胜信息技术股份有限公司 | Based on wireless three-phase synchronous method |
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2018
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| DE2800843A1 (en) * | 1978-01-10 | 1979-07-12 | Struever Kg Ad | Mains failure monitor used with three=phase sync. machine - has transformer between star point and neutral and frequency relay detecting voltage zero crossings for signalling too low frequency |
| JP2000200467A (en) * | 1999-01-07 | 2000-07-18 | Matsushita Electric Ind Co Ltd | Digital phase-locked loop circuit |
| KR20080048132A (en) * | 2006-11-28 | 2008-06-02 | 송종환 | Synchroning operation of distributed resource connecting to single phase ac power grid |
| CN105675953A (en) * | 2015-12-15 | 2016-06-15 | 国网山西省电力公司电力科学研究院 | Quasi-synchronization measuring method based on zero-crossing detection for power transmission line both-end voltage instantaneous voltage |
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| 姚文轩: "基于广域同步测量的电能质量参数检测关键技术研究", 《中国优秀博硕士学位论文全文数据库(博士)·工程科技Ⅱ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456174A (en) * | 2019-08-16 | 2019-11-15 | 智洋创新科技股份有限公司 | Three-phase synchronous method and system based on crystal oscillator ratio clock synchronization |
| CN110456174B (en) * | 2019-08-16 | 2022-05-17 | 智洋创新科技股份有限公司 | Three-phase synchronization method and system based on crystal oscillator proportional time synchronization |
| CN112104004A (en) * | 2020-09-08 | 2020-12-18 | 南通大学 | Voltage signal synchronous detection method for new energy power generation grid-connected control |
| CN112104004B (en) * | 2020-09-08 | 2022-02-18 | 南通大学 | Voltage signal synchronous detection method for new energy power generation grid-connected control |
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