CN105974353A - Mutual inductor amplitude and phase detection method based on virtual instrument - Google Patents
Mutual inductor amplitude and phase detection method based on virtual instrument Download PDFInfo
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- CN105974353A CN105974353A CN201610498123.1A CN201610498123A CN105974353A CN 105974353 A CN105974353 A CN 105974353A CN 201610498123 A CN201610498123 A CN 201610498123A CN 105974353 A CN105974353 A CN 105974353A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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Abstract
The invention discloses a mutual inductor amplitude and phase detection method based on a virtual instrument, and the method comprises the steps: carrying out the building of a test system hardware environment through employing a standard mutual inductor, an AC analog output instrument, data collection equipment and an industrial control computer; completing the collection of the amplitude and phase data of the mutual inductor through employing the test system hardware environment and a test program according to the testing requirements, and recording the data; carrying out the analysis of the amplitude and phase data of the mutual inductor after data collection, and obtaining the points with the amplitude and phase errors exceeding the standard; carrying out the curve fitting of an amplitude value, and giving the maximum section range with better linearity. The method employs an FPGA configuration board card for data collection, and a virtual instrument platform is employed for data processing. The method is high in sampling speed, is high in precision, can carry out the detection of the amplitude and phase of the mutual inductor quickly and repeatedly, is good in application prospect, and is worthy of popularization.
Description
Technical field
The present invention relates to a kind of transformer amplitude based on virtual instrument and method for detecting phases, belong to transformer test technical field.
Background technology
Virtual instrument technique (Virtual Instrument) is to utilize modularized hardware, completes the application of various test, measurement and automatization in conjunction with the software of high efficient and flexible.Data acquisition is separated by virtual instrument with data analysis, and the result of data collecting plate card gives software through high speed communication bus, and instrumental function is realized by software.Virtual instrument platform can be effectively applied to the work such as various data acquisition, parameter testing flexibly.
Transformer is a kind of special transformer that the information of electrical network high voltage, big electric current is delivered to low-voltage, the metering of small area analysis secondary side, measuring instruments and relay protection, automaton; transformer is the bridge of analog quantity and digital quantity, and the digital quantity that transformer is gathered is the important evidence of power system relay protection device data acquisition, status monitoring, protection act.Transformer amplitude is the most qualified with phase place, directly influences power system measuring accuracy and the reliability of relay protection action.
Protection supervisory equipment should meet the 3.5.2 part regulation of GB/T 13729-2002 for the transformer precision measuring ac analog；Ac analog amplitude error for protection should meet the 13.1.3 part regulation of the 13.5 and GB/T 20840.8-2007 of GB/T 20840.7-2007；Phase error should meet the 12.2 of 12.5 and GB/T 20840.8-2007 of GB/T 20840.7-2007,13.1.3 part regulation.Tradition transformer amplitude and method for detecting phases mainly use the test system that transformator, circuit tester, phasometer, analog oscilloscope etc. are built, bulky, complex operation, and on analog oscilloscope display screen, naked eyes are difficult to observe the amplitude error of between two-way sine wave less than 1% and the phase angle error of less than 1 degree.For guaranteeing the reliability service of power system, accelerating to advance China's sturdy power grid to build, a kind of protection supervisory equipment transformer amplitude of design and phase-detection platform, the amplitude of the most accurate detection transformer becomes, with phase place, the problem needing solution badly.
Summary of the invention
The technical problem to be solved is the defect overcoming prior art, a kind of transformer amplitude based on virtual instrument and method for detecting phases are provided, use FPGA board as data acquisition, numerical analysis uses virtual instrument platform, its acquisition precision is high, speed is fast, automatization level is high, and can the most repeatedly perform transformer amplitude and phase-detection, have a good application prospect, be worthy to be popularized.
For solving above-mentioned technical problem, the present invention provides a kind of transformer amplitude based on virtual instrument and method for detecting phases, comprises the following steps:
1) standard potential transformer or standard current transformer are utilized, ac analog output instrument, data acquisition equipment and industrial computer carry out test system hardware environmental structure, voltage transformer is tested, by former with standard potential transformer for former for voltage transformer to be measured limit limit incoming transport in parallel analog output instrument, voltage transformer to be measured all accesses data acquisition equipment with the secondary of standard potential transformer, current transformer is tested, is connected by Same Name of Ends in former with standard current transformer for former for current transformer to be measured limit limit and access ac analog output instrument, current transformer to be measured all accesses data acquisition equipment with the secondary of standard current transformer；Industrial computer is by Ethernet and data acquisition equipment communication, and uses USB to control ac analog output instrument；
2) according to test request, utilize test system hardware environment, write test program at industrial computer and complete the amplitude of voltage transformer or current transformer and the data acquisition of phase place, and record data；
3) after data acquisition completes, to step 2) amplitude that obtains is analyzed with phase data, draw the point that amplitude and phase error exceed standard, and interval linear to amplitude maximum detect, according to test request, using amplitude relative error maximum as boundary condition, amplitude data is constantly carried out fitting a straight line, finally find out qualified maximum linear interval.
Aforesaid data acquisition equipment uses FPGA architecture board.
Aforesaid step 2) data acquisition is as follows: industrial computer test program reads configuration file, start data acquisition, voltage transformer is tested, ac analog output instrument output AC analogue signal is to voltage transformer to be measured and standard potential transformer, test program automatic trigger data acquisition equipment gathers the voltage data of certain time, voltage data for collecting every time carries out FFT calculating, obtains amplitude and the phase place of voltage transformer, carries out data preservation after having tested；Current transformer is tested, ac analog output instrument output AC analogue signal is to current transformer to be measured and standard current transformer, test program automatic trigger data acquisition equipment gathers the current data of certain time, current data for collecting every time carries out FFT calculating, obtains amplitude and the phase place of current transformer；For phase place, with standard potential transformer/standard current transformer as phase zero points, calculate the phase contrast of voltage transformer to be measured/current transformer to be measured, for amplitude, on the basis of standard potential transformer/standard current transformer amplitude, calculate relative error；Data preservation is carried out after having tested.
The beneficial effect that the present invention is reached:
The present invention uses FPGA board to be 16 as data acquisition, data acquisition equipment sampling precision, and sample frequency reaches as high as 750kS/s；Numerical analysis uses software analysis, it is possible to display amplitude and phase place exceed standard test point, and are provided the maximum linear interval of amplitude by matching for several times.Acquisition precision of the present invention is high, speed is fast, automatization level is high, and can the most repeatedly perform transformer amplitude and phase-detection, has a good application prospect, is worthy to be popularized.
Accompanying drawing explanation
Fig. 1 is the test system building schematic diagram of the present invention；
Fig. 2 is the data acquisition flow figure of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
The transformer amplitude based on virtual instrument of the present invention comprises the following steps with method for detecting phases:
Step (1), utilizes standard mutual inductor, ac analog output instrument, data acquisition equipment and industrial computer to carry out test system hardware environmental structure.In Fig. 1, testing for voltage transformer, by former with standard potential transformer for former for voltage transformer to be measured limit limit incoming transport in parallel analog output instrument, voltage transformer to be measured all accesses data acquisition equipment with the secondary of standard potential transformer.Testing for current transformer, connected by Same Name of Ends on former with standard current transformer for former for current transformer to be measured limit limit and access ac analog output instrument, current transformer to be measured all accesses data acquisition equipment with the secondary of standard current transformer.Data acquisition equipment uses FPGA architecture board.Industrial computer is by Ethernet and data acquisition equipment communication, and uses USB to control ac analog output instrument.
Step (2), according to test request, utilizes test system hardware environment, writes test program at industrial computer and completes the amplitude of voltage transformer or current transformer and the data acquisition of phase place, and records data.As shown in Figure 2, data acquisition is as follows: industrial computer test program reads configuration file, start data acquisition, voltage transformer is tested, ac analog output instrument output AC analogue signal is to voltage transformer to be measured and standard potential transformer, current transformer is tested, ac analog output instrument output AC analogue signal is to current transformer to be measured and standard current transformer, test program automatic trigger data acquisition equipment gathers voltage or the current data of certain time, data for collecting every time carry out FFT calculating, obtain voltage transformer or the amplitude of current transformer and phase place.For phase place, with standard mutual inductor as phase zero points, calculate the phase contrast of to-be-tested transformer, for amplitude, on the basis of standard mutual inductor amplitude, calculate relative error.Finally, test completes, then carry out data preservation, effectively reduces data storage pressure, improves later data treatment effeciency；Otherwise, test is continued.
Step (3), after data acquisition completes, the amplitude obtaining step (2) is analyzed with phase data, draw the point that amplitude and phase error exceed standard, and interval linear to amplitude maximum detect, according to test request, using amplitude relative error maximum as boundary condition, amplitude data is constantly carried out fitting a straight line, finally finds out qualified maximum linear interval.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, on the premise of without departing from the technology of the present invention principle; can also make some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (3)
1. a transformer amplitude based on virtual instrument and method for detecting phases, it is characterised in that comprise the following steps:
1) standard potential transformer or standard current transformer are utilized, ac analog output instrument, data acquisition equipment and industrial computer carry out test system hardware environmental structure, voltage transformer is tested, by former with standard potential transformer for former for voltage transformer to be measured limit limit incoming transport in parallel analog output instrument, voltage transformer to be measured all accesses data acquisition equipment with the secondary of standard potential transformer, current transformer is tested, is connected by Same Name of Ends in former with standard current transformer for former for current transformer to be measured limit limit and access ac analog output instrument, current transformer to be measured all accesses data acquisition equipment with the secondary of standard current transformer；Industrial computer is by Ethernet and data acquisition equipment communication, and uses USB to control ac analog output instrument；
2) according to test request, utilize test system hardware environment, write test program at industrial computer and complete the amplitude of voltage transformer or current transformer and the data acquisition of phase place, and record data；
3) after data acquisition completes, to step 2) amplitude that obtains is analyzed with phase data, draw the point that amplitude and phase error exceed standard, and interval linear to amplitude maximum detect, according to test request, using amplitude relative error maximum as boundary condition, amplitude data is constantly carried out fitting a straight line, finally find out qualified maximum linear interval.
A kind of transformer amplitude based on virtual instrument the most according to claim 1 and method for detecting phases, it is characterised in that described data acquisition equipment uses FPGA architecture board.
A kind of transformer amplitude based on virtual instrument the most according to claim 1 and method for detecting phases, it is characterized in that, described step 2) data acquisition is as follows: industrial computer test program reads configuration file, start data acquisition, voltage transformer is tested, ac analog output instrument output AC analogue signal is to voltage transformer to be measured and standard potential transformer, test program automatic trigger data acquisition equipment gathers the voltage data of certain time, voltage data for collecting every time carries out FFT calculating, obtain amplitude and the phase place of voltage transformer, data preservation is carried out after having tested；Current transformer is tested, ac analog output instrument output AC analogue signal is to current transformer to be measured and standard current transformer, test program automatic trigger data acquisition equipment gathers the current data of certain time, current data for collecting every time carries out FFT calculating, obtains amplitude and the phase place of current transformer；For phase place, with standard potential transformer/standard current transformer as phase zero points, calculate the phase contrast of voltage transformer to be measured/current transformer to be measured, for amplitude, on the basis of standard potential transformer/standard current transformer amplitude, calculate relative error；Data preservation is carried out after having tested.
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| CN201610498123.1A CN105974353A (en) | 2016-06-29 | 2016-06-29 | Mutual inductor amplitude and phase detection method based on virtual instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680886A (en) * | 2018-05-24 | 2018-10-19 | 安徽国电京润电力科技有限公司 | Integral electrical voltage transformer automated calibration equipment |
| CN111141967A (en) * | 2019-10-28 | 2020-05-12 | 许昌开普检测研究院股份有限公司 | Method and system for testing test error of merging unit of power system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130238133A1 (en) * | 2010-07-12 | 2013-09-12 | The Regents of the University of Colorado, a body corporation | Analyzing ultrasonic signals using a dynamic window for an early detection of scaling in water processing equipment |
| CN105242230A (en) * | 2015-11-18 | 2016-01-13 | 南京国电南自电网自动化有限公司 | Merging unit mutual inductor transient state performance detection method based on virtual instrument |
| CN105353330A (en) * | 2015-10-14 | 2016-02-24 | 国家电网公司 | On-line verifying system and algorithm for electronic current transformer based on virtual instrument technology |
-
2016
- 2016-06-29 CN CN201610498123.1A patent/CN105974353A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130238133A1 (en) * | 2010-07-12 | 2013-09-12 | The Regents of the University of Colorado, a body corporation | Analyzing ultrasonic signals using a dynamic window for an early detection of scaling in water processing equipment |
| CN105353330A (en) * | 2015-10-14 | 2016-02-24 | 国家电网公司 | On-line verifying system and algorithm for electronic current transformer based on virtual instrument technology |
| CN105242230A (en) * | 2015-11-18 | 2016-01-13 | 南京国电南自电网自动化有限公司 | Merging unit mutual inductor transient state performance detection method based on virtual instrument |
Non-Patent Citations (3)
| Title |
|---|
| 尚秋峰 等: "基于LabVIEW模拟输出型电子式互感器误差调试系统", 《电源技术》 * |
| 李昊翔 等: "基于LabVIEW的模拟输出型电子式互感器校验系统", 《电测与仪表》 * |
| 蒋耘晨: "《虚拟实验室技术》", 31 March 2011 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680886A (en) * | 2018-05-24 | 2018-10-19 | 安徽国电京润电力科技有限公司 | Integral electrical voltage transformer automated calibration equipment |
| CN111141967A (en) * | 2019-10-28 | 2020-05-12 | 许昌开普检测研究院股份有限公司 | Method and system for testing test error of merging unit of power system |
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Application publication date: 20160928 |