CN102062820B - Method for automatically correcting wiring error when measuring three-phase alternating current - Google Patents
Method for automatically correcting wiring error when measuring three-phase alternating current Download PDFInfo
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Abstract
The invention discloses a method for automatically correcting a wiring error when measuring three-phase alternating current. A wiring identification module is arranged in a measurement device; a wiring configuration database is arranged in the wiring identification module; three columns of data, namely definition data, default data and identification data, are arranged in the wiring configuration database; after identifying the voltage and current of contacts of phases A, B and C, the wiring identification module fills the identified data into the third column in turn; and a calculation module is arranged in the measurement device, the calculation module is connected with the wiring configuration database, and the calculation module compares the data of the third column with the data of the second column and stores the calculated correct phases at corresponding positions for the measurement device to use. The method is favorable for solving the problem that a power user can accurately and simply solve the wiring error under the condition that the phase sequence is not clear and greatly improving the construction efficiency in the practical engineering practice.
Description
Technical field
The present invention relates to the measurement of three-phase alternating current.
Background technology
In the engineering practice of electric system, often run into phase sequence user and unclear situation in transmission of electricity, power transformation, the distribution line, and the A of the signal input terminal of various secondary devices, measurement mechanism, B, C phase voltage current requirements must correct wiring, otherwise measurement result does not meet logic.So at a lot of engineering sites, power consumer is in the on-site proving of carrying out ammeter, or before electric power secondary watch-dog was installed, the common on-the-spot phase sequence of mensuration earlier that needs was distinguished A, B, C phase, this needs expensive manpower and materials and time sometimes.
Summary of the invention
The method of wiring error that technology to be solved by this invention topic provides a kind of automatic correction when measuring three-phase alternating current, solve power consumer under the unclear situation of phase sequence, can correctly and simply solve the problem of wiring error, in the practical project practice, improve operating efficiency greatly.
For solving the problems of the technologies described above, technical scheme of the present invention is: the method for wiring error when three-phase alternating current is measured in a kind of automatic correction, comprise the measurement mechanism that is used to measure the various parameters of three-phase alternating current, comprise A contact, B contact, the C contact that joins that joins that joins in the described measurement mechanism, join contact and the A of measurement mechanism inside of described A measures the loop mutually and connects, and join contact and the B of measurement mechanism inside of described B measures loop connection, the described C contact that joins mutually and measure the loop mutually with the C of measurement mechanism inside and be connected; It is characterized in that: be provided with the wiring identification module in the described measurement mechanism, be provided with the wiring configuration database in the described wiring identification module, be provided with three column data in the described wiring configuration database, first column data is predefined definition of data, is followed successively by: the measurement of A phase voltage, the measurement of B phase voltage, the measurement of C phase voltage, A current phasor measurement, B current phasor measurement, C current phasor measurement; Second classifies default data as, is followed successively by: A phase voltage, B phase voltage, C phase voltage, A phase current, B phase current, C phase current; The 3rd classifies recognition data as, wiring identification module identification A the join contact, C of contact, B that join joins behind the voltage, electric current of contact, recognition data is inserted in the 3rd row successively, and the order of filling in is followed successively by: A contact virtual voltage, B contact virtual voltage, C contact virtual voltage, A contact actual current, B contact actual current, the C contact actual current that joins that joins that joins that joins that joins that joins; Be provided with computing module in the described measurement mechanism, described computing module is connected with the wiring configuration database, computing module compares the 3rd column data and secondary series data, and calculate A contact, B contact, C the separate of contact physical cabling that join that join that join, that will calculate correct separately is stored in its corresponding position and uses for measurement mechanism again.
Traditional method of operating is the wiring of change measurement mechanism, and the method for change wiring is easy in the laboratory, but to change wiring at the scene very inconvenient, also danger close, and workload is also very big.The present invention increases a wiring identification module in measurement mechanism or intelligent terminal, when the wiring identification module is found the wiring error of measurement mechanism, automatically revise wiring configuration database parameter, computing module is got corresponding calibration parameter, is calculated value accordingly according to the phase sequence of wiring configuration database, simultaneously according to the actual measurement wiring, correct calculated value is stored in correct position, guarantees the correctness of measurement data, in the practical project practice, improve operating efficiency greatly like this.
The beneficial effect that the present invention is compared with prior art brought is:
Solve power consumer under the unclear situation of phase sequence, can correctly and simply solve the problem of wiring error, in the practical project practice, improve operating efficiency greatly.
Embodiment
The method of wiring error when three-phase alternating current is measured in a kind of automatic correction, comprise the measurement mechanism that is used to measure the various parameters of three-phase alternating current, comprise A contact, B contact, the C contact that joins that joins that joins in the described measurement mechanism, join contact and the A of measurement mechanism inside of described A measures the loop mutually and connects, and join contact and the B of measurement mechanism inside of described B measures loop connection, the described C contact that joins mutually and measure the loop mutually with the C of measurement mechanism inside and be connected; It is characterized in that: be provided with the wiring identification module in the described measurement mechanism, be provided with the wiring configuration database in the described wiring identification module, be provided with three column data in the described wiring configuration database, first column data is predefined definition of data, is followed successively by: the measurement of A phase voltage, the measurement of B phase voltage, the measurement of C phase voltage, A current phasor measurement, B current phasor measurement, C current phasor measurement; Second classifies default data as, is followed successively by: A phase voltage, B phase voltage,, C phase voltage, A phase current, B phase current, C phase current; The 3rd classifies recognition data as, wiring identification module identification A the join contact, C of contact, B that join joins behind the voltage, electric current of contact, recognition data is inserted in the 3rd row successively, and the order of filling in is followed successively by: A contact virtual voltage, B contact virtual voltage, C contact virtual voltage, A contact actual current, B contact actual current, the C contact actual current that joins that joins that joins that joins that joins that joins; Be provided with computing module in the described measurement mechanism, described computing module is connected with the wiring configuration database, computing module compares the 3rd column data and secondary series data, and calculate A contact, B contact, C the separate of contact physical cabling that join that join that join, that will calculate correct separately is stored in its corresponding position and uses for measurement mechanism again.
Actual measurement with field electric energy table tester CL11119 describes:
1, when the user uses CL11119, A, the B at scene, the electric current and voltage of C must be received on the connection terminal of the A of CL11119, B, C phase voltage electric current, electric current as for the A phase current terminal of receiving CL11119 is actual A phase current, and possible user oneself does not know yet;
2, before CL11119 begins to calculate, can at first start the wiring identification module, it is separate that signal reality is received on the connection terminal of A, B, C phase voltage electric current of CL11119 in analysis, if analysis result is a signal that the A phase voltage terminal of CL11119 connects is that signal that the B phase voltage terminal of B phase voltage, CL11119 connects is that signal that the C phase voltage terminal of A phase voltage, CL11119 connects is the signal total correctness that the current terminal of C phase voltage, CL11119 connects, the 3rd row recognition data of then filling in the wiring configuration database is " B, A, C, A, B, C ", as following table:
| Definition of data (phase sequence) | Default data (phase sequence) | Recognition data (phase sequence) |
| The A phase voltage is measured | The A phase voltage | The B phase voltage |
| The B phase voltage is measured | The B phase voltage | The A phase voltage |
| The C phase voltage is measured | The C phase voltage | The C phase voltage |
| The A current phasor measurement | The A phase current | The A phase current |
| The B current phasor measurement | The B phase current | The B phase current |
| The C current phasor measurement | The C phase current | The C phase current |
When 3, beginning to calculate, the parameter of using the 3rd row recognition data in the wiring configuration database is utilized computing module to calculate and just can be obtained correct result as separate parameter.
In the situation of wiring error, except separate wiring error, also have a kind of wiring error, for alternating voltage, live wire and zero line connect instead, and for alternating current, the inflow end of electric current is anti-with the outflow termination.Connect anti-situation for alternating voltage live wire and zero line and must change false wiring, and alternating current flows into the method that the end situation anti-with flowing out termination can be used this patent, corrects from software automatically, and needn't change wiring.Because flowing into end, electric current has only 180 degree of phasic difference mutually termination inverse time with outflow, and the amplitude size is constant, and cos180+jsin180=-1, so only the vector value of electric current need be multiply by-1, just can correct electric current flows into end and flows out the anti-situation of termination, so just avoid the workload of change wiring, improved work efficiency.
Claims (1)
1. the method for wiring error when one kind three-phase alternating current is measured in correction automatically, comprise the measurement mechanism that is used to measure the various parameters of three-phase alternating current, comprise A contact, B contact, the C contact that joins that joins that joins in the described measurement mechanism, join contact and the A of measurement mechanism inside of described A measures the loop mutually and connects, and join contact and the B of measurement mechanism inside of described B measures loop connection, the described C contact that joins mutually and measure the loop mutually with the C of measurement mechanism inside and be connected; It is characterized in that: be provided with the wiring identification module in the described measurement mechanism, be provided with the wiring configuration database in the described wiring identification module, be provided with three column data in the described wiring configuration database, first column data is predefined definition of data, is followed successively by: the measurement of A phase voltage, the measurement of B phase voltage, the measurement of C phase voltage, A current phasor measurement, B current phasor measurement, C current phasor measurement; Second classifies default data as, is followed successively by: A phase voltage, B phase voltage, C phase voltage, A phase current, B phase current, C phase current; The 3rd classifies recognition data as, wiring identification module identification A the join contact, C of contact, B that join joins behind the voltage, electric current of contact, recognition data is inserted in the 3rd row successively, and the order of filling in is followed successively by: A contact virtual voltage, B contact virtual voltage, C contact virtual voltage, A contact actual current, B contact actual current, the C contact actual current that joins that joins that joins that joins that joins that joins; Be provided with computing module in the described measurement mechanism, described computing module is connected with the wiring configuration database, computing module compares the 3rd column data and secondary series data, and calculate A contact, B contact, C the separate of contact physical cabling that join that join that join, that will calculate correct separately is stored in its corresponding position and uses for measurement mechanism again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010575001 CN102062820B (en) | 2010-12-03 | 2010-12-03 | Method for automatically correcting wiring error when measuring three-phase alternating current |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010575001 CN102062820B (en) | 2010-12-03 | 2010-12-03 | Method for automatically correcting wiring error when measuring three-phase alternating current |
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| CN102062820A CN102062820A (en) | 2011-05-18 |
| CN102062820B true CN102062820B (en) | 2013-07-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102735986B (en) * | 2012-07-02 | 2014-06-25 | 安徽中兴继远信息技术股份有限公司 | Method for rapidly judging wiring error of power distribution transformer monitoring terminal |
| CN104502736B (en) * | 2015-01-09 | 2017-06-23 | 珠海派诺科技股份有限公司 | A kind of online phase sequence self-adaption method |
| CN107346891A (en) * | 2016-06-14 | 2017-11-14 | 台州市劲野智能科技有限公司 | SVC with wiring error correction |
| CN106569083B (en) * | 2016-11-09 | 2019-10-22 | 上海卓源节能科技有限公司 | Three-phase power instrument wiring abnormality recognition method |
| CN108445438B (en) * | 2018-03-23 | 2021-10-15 | 国网河北省电力有限公司电力科学研究院 | Method and device for detecting wrong wiring of electric energy metering device |
| CN109101362A (en) * | 2018-06-28 | 2018-12-28 | 广州视源电子科技股份有限公司 | Communication correction method, device, readable storage medium and slave |
| CN112230177A (en) * | 2019-12-20 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Three-phase self-recognition calibration method applied to electric meter |
| CN111060754A (en) * | 2019-12-31 | 2020-04-24 | 南京新联智慧能源服务有限公司 | Electric energy information acquisition terminal with automatic phase sequence identification function and automatic phase sequence identification method |
| CN113281677A (en) * | 2021-04-08 | 2021-08-20 | 珠海格力电器股份有限公司 | Wiring detection method, device, equipment, variable frequency control circuit and system |
| CN115963433B (en) * | 2023-03-13 | 2023-08-08 | 深圳市科陆精密仪器有限公司 | Electric energy meter wiring inspection method, device, equipment and storage medium |
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| CN1065533A (en) * | 1991-03-29 | 1992-10-21 | 陆惠德 | Watt-hour meter error connection inspection method and instrument |
| US7660776B1 (en) * | 2004-12-30 | 2010-02-09 | Kennebec Miles Kious | System for automatically identifying power system type and identifying likely errors of wiring and connection |
| CN200953039Y (en) * | 2006-08-01 | 2007-09-26 | 西安爱邦电气有限公司 | Electric protection line wiring analyser |
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