CN102478648B - A device measured value precision automatic calibration method and system - Google Patents
A device measured value precision automatic calibration method and system Download PDFInfo
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- CN102478648B CN102478648B CN2010105576902A CN201010557690A CN102478648B CN 102478648 B CN102478648 B CN 102478648B CN 2010105576902 A CN2010105576902 A CN 2010105576902A CN 201010557690 A CN201010557690 A CN 201010557690A CN 102478648 B CN102478648 B CN 102478648B
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Abstract
A protection measurement and control device measured value automatic calibration system comprises a power amplifier, a network switch, a standard protection measurement and control device, protection measurement and control devices to be calibrated, precision calibration parameter analyzing and computing submodules and a measured value precision calibration test computing and controlling module. The standard protection measurement and control device is calibrated manually, models of the protection measurement and control devices to be calibrated and the precision calibration parameter analyzing and computing submodules are the same, and the measured value precision calibration test computing and controlling module is provided with a power amplifier output control submodule, a protection measurement and control device parameter configuration submodule, a network communication submodule and a precision calibration parameter analyzing and computing submodule; and the power amplifier is used as a current and voltage output source of the N protection measurement and control devices connected in parallel, and N is the largest number of the protection measurement and control devices capable of being simultaneously driven by the power amplifier. The protection measurement and control device measured value automatic calibration system is a comprehensive current and voltage precision parameter automatic calibration system, is applicable to calibrating measured value precision of the protection measurement and control devices of an electric power system in a batched manner, and resolves problems that at present, manual precision calibration is uncertain, precision is not high, efficiency is low, record of calibration test reports is troublesome, and the like.
Description
Technical field
The invention belongs to power automation protection measure and control device accuracy test and calibration field.Relate to a kind of protection measure and control device measured value precision automated calibration system of protecting measure and control device measured value precision automatic calibration method and by the method, being constructed.The precision automatic calibration of measured value when it is applicable to produce the protection measure and control device in batches.
Background technology
In recent years, power grid construction faces unprecedented growth, thereby drives the rapid growth of secondary device in electric system.The widespread use of microcomputer protecting controller, also measuring technology and measuring accuracy have been proposed more extensive, more accurate requirement.And present situation all the time is; the measured value accuracy calibration of protection measure and control device is all by manual calibration; a current/voltage high precision source is to a protection measure and control device; have and manually read the sampled value data and new accuracy calibration parameter is set; read again the sampled value data accuracy calibration parameter is set again; constantly repeatedly this process until reach desired value, the last various accuracy calibration parameters of manual record.The method of this manual calibration not only process is loaded down with trivial details, inefficiency, and also the utmost point is unfavorable for the batch production of device.For head it off, just be necessary the characteristics according to the protection measure and control device, actual in conjunction with producing, propose the new method of protection measure and control device measured value accuracy calibration, and with this new method, develop protection measure and control device measured value precision automated calibration system.
Summary of the invention
Purpose of the present invention; to protect at present the measure and control device measured value by manually carrying out the uncertainty of accuracy calibration for solving; precision is inaccurate; inefficiency; the problems such as registration accuracy calibration testing report is very loaded down with trivial details; and a kind of collecting system of exploitation is implemented to be easier to, test more quick, the accuracy calibration Auto-Test System that test result is more detailed.
the present invention has following technical proposals to realize, a kind of protection measure and control device measured value automated calibration system (seeing accompanying drawing 1), comprise power amplifier, the network switch, the protection measure and control device that calibrate manually in process high precision source, the protection measure and control device that same model is to be calibrated and accuracy calibration parameter analytical calculation submodule, measured value accuracy calibration measuring and calculation and control module, measured value accuracy calibration measuring and calculation and control module are provided with power amplifier output and control submodule, protection measure and control device parameter configuration submodule, network communication submodule (meeting IEC103 stipulations communication submodule and IEC61850 stipulations communication submodule), form with accuracy calibration parameter analytical calculation submodule, power amplifier is as the current/voltage source of the protection measure and control device of N platform parallel connection, N is the maximum protection measure and control device quantity that power amplifier can drive simultaneously, the protection measure and control device of calibrating manually through the high precision source is as canonical measure Value Data reading object that can reference, the i.e. theoretical input value of acceptable accuracy calibration, connect measured value accuracy calibration measuring and calculation and control module after the signal input network switch of the protection measure and control device after school is protected measure and control device and is connected.
Measured value accuracy calibration measuring and calculation and control module are responsible for that N platform protection measure and control device measurement data and precision are checked the reading of supplemental characteristic, calculated, judgement and data return, its job step as shown in Figure 2:
The 1st step: the notice power amplifier carries out current/voltage output;
The 2nd step: the measured value and the accuracy calibration parameter that read standard set-up and device to be calibrated;
The 3rd step: the precision parameter that calculates device to be calibrated;
Label taking is certainly protected measure and control device j passage and is amounted to M measured value in a data read cycle T, removes maximal value and minimum value, and the mean value of measured value in the middle of getting is designated as SMV (j):
The measured value data that S (i) (i) reads for the i time of j measured value passage of standard protection measure and control device.Suppose that the corresponding precision parameter of this standard protection measure and control device j passage is designated as SPV (j); The precision parameter of same model n platform protection measure and control device to be calibrated j passage is designated as NPV (n) (j); and get the j passage amount to M measured value in same data read cycle T; remove maximal value and minimum value; the mean value of measured value in the middle of getting is designated as NMV (n) (j):
F (n) (j) (i) is the measured value data that the i time of j measured value passage of n platform protection measure and control device to be calibrated read.Measured value calibration testing calculation and control module is the core of whole system, is responsible for N platform protection measure and control device measured value data and accuracy calibration supplemental characteristic and reads, N platform protection measure and control device measured value accuracy calibration calculation of parameter, judgement and data passback.It has power amplifier output to control submodule, protection measure and control device configuration submodule, and network communication submodule (meeting IEC103 stipulations communication submodule and IEC61850 stipulations communication submodule), accuracy calibration parameter analytical calculation submodule forms.Thereby realize that a power amplifier, to many protection measure and control devices functions of calibrating simultaneously, has improved calibration accuracy on the one hand, improved on the one hand calibration efficiency, standard measured value accuracy calibration flow process.
Precision parameter after n platform protection measure and control device j channel measurement value calibration is:
NPV (n) (j)=SMV (j) * SPV (j)/NMV (n) (j) ... ... ... ... formula 3
(annotate: in formula 1, formula 2, formula 3: n is n platform protective device, n≤N wherein, and j is j measured value passage of protection measure and control device.) network switch is as the switch of same model standard protection measure and control device, same model protection measure and control device to be calibrated, control and computation host.(this numerical value is in certain regional extent, as Pmin＜NPV (n) (j)＜Pmax) in new precision parameter process size reasonable judgement.
The 4th step: install to each under the result after calculating and treat in capacity checking device;
The 5th step: read again the measured value of device to be calibrated, judge whether its precision meets the demands; , if meet finish, do not meet and return the continuation of the 2nd step.
Described measurement device value precision automated calibration system, system all can provide comparatively detailed accuracy calibration test report after N platform protection measure and control device being carried out accuracy calibration at every turn, possess simultaneously accuracy calibration test report online management and printing function.
Wherein, the output of the current and voltage quantities of power amplifier with stop by the control of accuracy calibration measuring and calculation and control module.
The invention has the beneficial effects as follows: provide a kind of and solve present protection measure and control device measured value by manually carrying out the uncertainty of accuracy calibration; precision is inaccurate; inefficiency; the problems such as registration accuracy calibration testing report is very loaded down with trivial details; and the accuracy calibration test macro that proposes is implemented to be easier to; test more quick, the accuracy calibration Auto-Test System that test result is more detailed.Be applicable to calibration protection measure and control device in batches.
Fig. 1 protects measure and control device precision automatic calibration test macro Organization Chart
Fig. 2 protects measure and control device accuracy calibration test macro precision automatic calibration process flow diagram
The invention will be further described below in conjunction with accompanying drawing: as shown in Figure 1: comprise power amplifier; standard protection measure and control device; protection measure and control device to be calibrated; the network switch; measured value accuracy calibration and software model and some necessary tested media, as power supply output line, grid line; printer, build protection measure and control device measured value accuracy calibration test platform according to Fig. 1.
After system building is complete; start measured value accuracy calibration measuring and calculation and control module; the IP address of standard protection measure and control device is set; be designated as: IP1:198.120.0.1; the IP address of standard to be calibrated protection measure and control device is followed successively by: IP2 to IPN-1, and N=6:198..120.0.2 here ... 198.120.0.6; simultaneously according to IP1, the IP address of IP2 to IP6 setting device., according to the device model, select corresponding device configuration file at measured value accuracy calibration and software model lateral root.Precision parameter data read cycle T=10s is set, and reading out data is 15 times in a data read cycle, and software module can be according to the measured value of these configuration file reading devices, thereby realizes the accuracy calibration to device.
Above-mentioned steps after setting completed, can arrange the accuracy calibration requirement according to the product company standard,, as 2/1000ths, can carry out accuracy calibration.At first, system is sent output command to power amplifier; Precision parameter calibration calculations and control module read the precision parameter of standard set-up and device to be calibrated and measured value 15 times in 10s; by formula 1; formula 2; accuracy calibration parameter after formula 3 calculates and will calculate is write into protection measure and control device to be calibrated by the network communication submodule; after postponing a period of time; system reads the measured value data of protection measure and control device to be calibrated again; the data of these data and standard protective device are compared; if meet the company standard requirement; stop calibration, and printing precision calibration testing report.Otherwise continue to carry out accuracy calibration.
Claims (4)
1. protect measure and control device measured value precision automatic calibration method, by power amplifier, the network switch, protect measure and control device through the same model that calibrate manually in the high precision source, same model protection measure and control device to be calibrated, form with measured value accuracy calibration measuring and calculation and control module, it has power amplifier output to control submodule, protection measure and control device parameter configuration submodule, network communication submodule and accuracy calibration parameter analytical calculation submodule form automated calibration system, until being connected the signal input network switch of protection measure and control device with calibration after, protection measure and control device in school connects measured value accuracy calibration measuring and calculation and control module, power amplifier is as the current/voltage source of the protection measure and control device of N platform parallel connection, N is the maximum protection measure and control device quantity that power amplifier can drive simultaneously, it is characterized in that: as canonical measure Value Data reading object that can reference, these measured value data are considered to the theoretical input value of the acceptable accuracy calibration of system through the protection measure and control device of manual calibration, connect measured value accuracy calibration measuring and calculation and control module after the signal input network switch of protection measure and control device to be calibrated and protection measure and control device through manual calibration,
Measured value accuracy calibration measuring and calculation and control module are responsible for that N platform protection measure and control device measurement data and precision are checked the reading of supplemental characteristic, calculated, judgement and data return, and its job step is:
The 1st step: the notice power amplifier carries out current/voltage output;
The 2nd step: the measured value and the accuracy calibration parameter that read standard set-up and device to be calibrated;
The 3rd step: the precision parameter that calculates device to be calibrated;
The 4th step: install to each under the result after calculating and treat in capacity checking device;
The 5th step: read again the measured value of device to be calibrated, judge whether its precision meets the demands; , if meet finish, do not meet and return the continuation of the 2nd step.
2. protection measure and control device measured value precision automatic calibration method according to claim 1; it is characterized in that: the computing method in the 3rd step are: label taking is certainly protected measure and control device j passage and is amounted to M+2 measured value in a data read cycle T; remove maximal value and minimum value; the mean value of measured value in the middle of getting is designated as SMV (j):
Wherein: the measured value data that s (j) (i) reads for the i time of j measured value passage of standard protection measure and control device; The corresponding precision parameter of this standard protection measure and control device j passage is designated as SPV (j); The precision parameter of same model n platform protection measure and control device to be calibrated j passage is designated as NPV (n) (j); and get the j passage amount to M+2 measured value in same data read cycle T; remove maximal value and minimum value; the mean value of measured value in the middle of getting is designated as NMV (n) (j):
Wherein: F (n) (j) (i) is the i time measured value data of n platform protection j measured value passage of measure and control device; Measured value calibration testing calculation and control module reads measured value and the accuracy calibration parameter of N platform protection measure and control device; thereby the measured value accuracy calibration parameter to N platform protection measure and control device is calculated, and the precision parameter after j channel measurement value calibration of n platform protection measure and control device is:
In formula 1, formula 2 and formula 3: n is n platform protective device, n≤N wherein, and j is j measured value passage of protection measure and control device; Precision parameter NPV (n) after calibration (j) carries out the data rationality and judges.
3. according to protection measure and control device measured value precision automatic calibration method claimed in claim 1; it is characterized in that: after system is carried out accuracy calibration to N platform protection measure and control device at every turn; capital provides comparatively detailed accuracy calibration test report, and supports online printing and the management function of test report.
4., according to protection measure and control device measured value precision automatic calibration method claimed in claim 1, it is characterized in that: by the output of the current and voltage quantities of accuracy calibration measuring and calculation and control module power ratio control amplifier with stop.
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| CN105119581B (en) * | 2015-08-27 | 2017-10-17 | 电子科技大学 | A kind of solid state power amplifier automatic calibrating method |
| CN107843867A (en) * | 2017-09-19 | 2018-03-27 | 珠海格力电器股份有限公司 | Method and device for acquiring calibration parameters |
| CN108107294B (en) * | 2017-12-27 | 2020-02-07 | 国网冀北电力有限公司张家口供电公司 | Microcomputer relay protection test system based on measurement modularization |
| CN114448884B (en) * | 2022-03-02 | 2023-10-20 | 深圳市友华通信技术有限公司 | Routing equipment, power calibration method of routing equipment and storage medium |
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| US6735535B1 (en) * | 2000-05-05 | 2004-05-11 | Electro Industries/Gauge Tech. | Power meter having an auto-calibration feature and data acquisition capabilities |
| CN2632686Y (en) * | 2003-06-05 | 2004-08-11 | 李政良 | Kilowatt meter calibrator by common memory for transferring calibration parameters |
| CN101629994A (en) * | 2009-08-07 | 2010-01-20 | 深圳市科陆电子科技股份有限公司 | Method for automatically calibrating terminal in batch |
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| US6574576B2 (en) * | 2001-04-03 | 2003-06-03 | Macronix International Co., Ltd. | Equalizer with auto-calibration and self-test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6735535B1 (en) * | 2000-05-05 | 2004-05-11 | Electro Industries/Gauge Tech. | Power meter having an auto-calibration feature and data acquisition capabilities |
| CN2632686Y (en) * | 2003-06-05 | 2004-08-11 | 李政良 | Kilowatt meter calibrator by common memory for transferring calibration parameters |
| CN101629994A (en) * | 2009-08-07 | 2010-01-20 | 深圳市科陆电子科技股份有限公司 | Method for automatically calibrating terminal in batch |
Non-Patent Citations (2)
| Title |
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| "电子仪器自动检定/校准***通用接口设计";容晓峰等;《陕西科技大学学报》;20100630;第28卷(第3期);第101页第3.1节，图3 * |
| 容晓峰等."电子仪器自动检定/校准***通用接口设计".《陕西科技大学学报》.2010,第28卷(第3期),第101页第3.1节，图3. |
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