CN102478648A - 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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- CN102478648A CN102478648A CN2010105576902A CN201010557690A CN102478648A CN 102478648 A CN102478648 A CN 102478648A CN 2010105576902 A CN2010105576902 A CN 2010105576902A CN 201010557690 A CN201010557690 A CN 201010557690A CN 102478648 A CN102478648 A CN 102478648A
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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 calibrating method and constructing by this method.The precision of measured value was calibrated automatically when it was applicable to batch process protection measure and control device.
Background technology
In recent years, power grid construction faces unprecedented growth, thereby drives the quick growth of secondary device in the 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 precision calibration of protection measure and control device all is by manual calibration; Current/voltage high precision source is to a protection measure and control device, has manual work to read the sampled value data and new precision calibration parameter is set, and reads the sampled value data again the precision calibration parameter is set again; Constantly repeatedly this process up to reaching desired value, the last various precision 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 process of device.Be head it off, just be necessary the characteristics based on the protection measure and control device, actual in conjunction with producing, the new method of measure and control device measured value precision calibration is protected in proposition, and develops protection measure and control device measured value precision automated calibration system with this new method.
Summary of the invention
The object of the invention; Be to be used to solve the uncertainty that present protection measure and control device measured value carries out the precision calibration by manual work, precision is inaccurate, inefficiency; 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, and test more fast, and the precision that test result is more detailed is calibrated Auto-Test System.
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 protection measure and control device, same model protection measure and control device and precision calibration parameter analytical calculation submodule, the calibration testing calculating of measured value precision and the control module to be calibrated that calibrate manually in power amplifier, the network switch, process high precision source; Calibration testing calculating of measured value precision and control module are provided with power amplifier output controlling sub, protection measure and control device parameter configuration submodule, network communication submodule (meeting IEC103 stipulations communication submodule and IEC61850 stipulations communication submodule) and precision calibration parameter analytical calculation submodule and form; 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, and promptly acceptable accuracy is calibrated theoretical input value; Be connected calibration testing calculating of measured value precision and control module behind the signal fan-in network switch of the protection measure and control device after treating school protection measure and control device and calibrating.
Calibration testing calculating of measured value precision and control module are responsible for the reading of N platform protection measure and control device measurement data and precision check supplemental characteristic, are calculated, judgement and returning data, and its job step is 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 precision calibration parameter that read standard set-up and device to be calibrated;
The 3rd step: the precision parameter that calculates device to be calibrated;
In a data read cycle T, get standard protection measure and control device j passage and amount to M measured value, remove maximal value and minimum value, 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 pairing 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 in same data read cycle T, get the j passage and amount to M measured value; 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 calculating and control module then are the cores of total system, are responsible for N platform protection measure and control device measured value data and precision calibration parameter data and read, the calculating of N platform protection measure and control device measured value precision calibration parameter, judgement and returning data.It has power amplifier output controlling sub, protection measure and control device configuration submodule, and network communication submodule (meeting IEC103 stipulations communication submodule and IEC61850 stipulations communication submodule), precision calibration parameter analytical calculation submodule is formed.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 calibration efficiency on the one hand, standard measured value precision calibration flow process.
Precision parameter behind the 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, the formula 3: n is a 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 areal extent, like Pmin＜NPV (n) (j)＜Pmax) in new precision parameter process size reasonable property judgement.
The 4th step: install to each under the result after will calculating and wait to check in the device;
The 5th step: read the measured value of device to be calibrated again, judge whether its precision meets the demands; If satisfy then end, do not satisfy returning the continuation of the 2nd step.
Described measurement device value precision automated calibration system, system all can provide comparatively detailed precision calibration testing report after N platform protection measure and control device being carried out the precision calibration at every turn, possesses precision calibration testing report online management and printing function simultaneously.
Wherein, the output of the current and voltage quantities of power amplifier with stop to control by precision calibration testing calculating and control module.
The invention has the beneficial effects as follows: a kind of present protection measure and control device measured value is carried out the precision calibration by manual work uncertainty that solves is provided; Precision is inaccurate; Inefficiency, problems such as very loaded down with trivial details are reported in the registration accuracy calibration testing, and the precision calibration test system that proposes is implemented to be easier to; Test more quick, the more detailed precision of test result calibration Auto-Test System.Be applicable to calibration protection measure and control device in batches.
Description of drawings
Fig. 1 protects the automatic calibration test system Organization Chart of measure and control device precision
Fig. 2 protects measure and control device precision calibration test system precision to calibrate process flow diagram automatically
Embodiment
Below in conjunction with accompanying drawing the present invention is described further: 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; The calibration of measured value precision and Control Software module and some necessary tested media, like power supply output line, grid line; Printer is built protection measure and control device measured value precision calibration testing platform according to Fig. 1.
After system building finishes, start measured value precision calibration testing calculating and control module, the IP address of the protection measure and control device that sets up standard; 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.Calibrate and control the software module side group in the device model in the measured value precision, select device profile corresponding.Precision parameter data read cycle T=10s is set, and reading of 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 precision calibration to device.
After the above-mentioned steps setting finishes, can the precision alignment requirements be set,, can carry out the precision calibration as 2/1000ths based on the product company standard.At first, system sends output command to power amplifier; Precision parameter calibration calculations and control module read precision parameter and the measured value 15 times of standard set-up and device to be calibrated in 10s; Through formula 1, formula 2, the precision calibration parameter after formula 3 calculates and will calculate is write into protection measure and control device to be calibrated through 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 once more, the data of these data and standard protective device is compared, if satisfy the company standard requirement; Then stop calibration, and printing precision calibration testing report.Otherwise continue to carry out the precision calibration.
Claims (6)
1. protect measure and control device measured value automated calibration system for one kind; It is characterized in that: comprise power amplifier, the network switch, protect measure and control device, same model protection measure and control device and precision calibration parameter analytical calculation submodule, the calibration testing calculating of measured value precision and control module to be calibrated through the standard of manual calibration, calibration testing calculating of measured value precision and control module are provided with power amplifier output controlling sub, protection measure and control device parameter configuration submodule, network communication submodule and precision calibration parameter analytical calculation submodule and form; Power amplifier is as the current/voltage output source of the protection measure and control device of N platform parallel connection, and N is the maximum protection measure and control device quantity that power amplifier can drive simultaneously.
2. protect measure and control device measured value precision automatic calibrating method; Same model protection measure and control device, the same model protection measure and control device to be calibrated and the calibration testing calculating of measured value precision of calibrating manually by power amplifier, the network switch, through the high precision source is with control module is formed, it is exported controlling sub, protected measure and control device parameter configuration submodule, network communication submodule and precision calibration parameter analytical calculation submodule to form automated calibration system by power amplifier, treats to be connected calibration testing calculating of measured value precision and control module after the signal fan-in network switch of protection measure and control device of measure and control device and calibration is protected in the school; 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 system's acceptable accuracy and calibrate theoretical input value through the protection measure and control device of manual calibration; Be connected calibration testing calculating of measured value precision and control module behind the signal fan-in network switch of the protection measure and control device to be calibrated and the protection measure and control device of process manual calibration.
3. protection measure and control device measured value precision automatic calibrating method as claimed in claim 2; It is characterized in that: calibration testing calculating of measured value precision and control module are responsible for the reading of N platform protection measure and control device measurement data and precision check supplemental characteristic, are calculated, judgement and returning data, 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 precision 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 will calculating and wait to check in the device;
The 5th step: read the measured value of device to be calibrated again, judge whether its precision meets the demands; If satisfy then end, do not satisfy returning the continuation of the 2nd step.
4. protection measure and control device measured value precision automatic calibrating method according to claim 3; It is characterized in that: the computing method in the 3rd step are: in a data read cycle T, get standard protection measure and control device j passage and amount to M+2 measured value; 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 pairing 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 in same data read cycle T, get the j passage and amount to M measured value; 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 calculating and control module read the measured value and the precision calibration parameter of N platform protection measure and control device; Thereby the measured value precision calibration parameter to N platform protection measure and control device calculates, and the precision parameter behind j channel measurement value calibration of n platform protection measure and control device is:
NPV (n) (j)=SMV (j) * SPV (j)/NMV (n) (j) ... ... ... ... formula 3
In formula 1, formula 2 and the formula 3: n is a n platform protective device, n≤N wherein, and j is j measured value passage of protection measure and control device.New precision parameter NPV (n) (j) carries out the data rationality and judges.
5. according to claim 1 or 2 described measured value precision automatic calibrating methods; It is characterized in that: after system carries out the precision calibration to N platform protection measure and control device at every turn; The capital provides comparatively detailed precision calibration testing report, and supports the online printing and the management function of test report.
6. according to the described measured value precision of claim 3 automatic calibrating method, it is characterized in that: by the output of the current and voltage quantities of precision calibration testing calculating and control module control power amplifiers with stop.
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Cited By (4)
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| CN105119581A (en) * | 2015-08-27 | 2015-12-02 | 电子科技大学 | Automatic calibration method for solid-state power amplifier |
| 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 |
| CN108107294A (en) * | 2017-12-27 | 2018-06-01 | 国网冀北电力有限公司张家口供电公司 | A kind of microcomputer protective relay pilot system based on measurement module |
| CN114448884A (en) * | 2022-03-02 | 2022-05-06 | 深圳市友华通信技术有限公司 | Routing device, power calibration method of routing device and storage medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119581A (en) * | 2015-08-27 | 2015-12-02 | 电子科技大学 | Automatic calibration method for solid-state power amplifier |
| 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 |
| CN108107294A (en) * | 2017-12-27 | 2018-06-01 | 国网冀北电力有限公司张家口供电公司 | A kind of microcomputer protective relay pilot system based on measurement module |
| 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 |
| CN114448884A (en) * | 2022-03-02 | 2022-05-06 | 深圳市友华通信技术有限公司 | Routing device, power calibration method of routing device and storage medium |
| 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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