CN101988957A - Dynamic detection method and system of sampling accuracy of electric quantity of merging unit of substation - Google Patents
Dynamic detection method and system of sampling accuracy of electric quantity of merging unit of substation Download PDFInfo
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- CN101988957A CN101988957A CN2009100557851A CN200910055785A CN101988957A CN 101988957 A CN101988957 A CN 101988957A CN 2009100557851 A CN2009100557851 A CN 2009100557851A CN 200910055785 A CN200910055785 A CN 200910055785A CN 101988957 A CN101988957 A CN 101988957A
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Abstract
The invention discloses a dynamic detection method and system of sampling accuracy of electric quantity of a merging unit of a substation. The system comprises a standard detecting device, a measuring data comparing module, an error region interval acquiring module and a detecting result identifying module, wherein the standard detecting device is used for respectively measuring the electric quantity at the same time point with the merging unit; the measuring data comparing module is used for comparing the measuring data at the same time point to acquire the measuring errors of N numbered time points; the error region interval acquiring module is used for acquiring the region interval 2*a of the measuring errors; and the detecting result identifying module is used for judging whether the region interval 2*a of the measuring errors is in the range of the corresponding intervals of the measuring grades set by the merging unit or not, if the region interval 2*a of the measuring errors is in the range, the merging unit meets the grade requirement thereof, and if the region interval 2*a of the measuring errors is not in the range, the merging unit does not meet the grade requirement thereof. According to the invention, the dynamic detection of the sampling accuracy of the electric quantity of the merging unit can be realized, thereby filling the blank of the technical field.
Description
Technical field
The present invention relates to a kind of dynamic testing method of electric weight sampling accuracy, relate in particular to a kind of dynamic testing method of digital transformer substation merge cells electric weight sampling accuracy; In addition, the invention still further relates to a kind of dynamic detection system of digital transformer substation merge cells electric weight sampling accuracy.
Background technology
Detecting the traditional approach of digital transformer substation merge cells electric weight sampling accuracy, as the detection method to telemechanical ac sampling device, interchange transmitter and telemechanical measuring equipment RTU, is to utilize direct comparison method to measure on the basis of transient measuring.That is to say that this metering system is to be based upon measured system to be in metastable state, carry out under the very little situation of signal fluctuation.The value that detected device and standard detection device are measured within a certain period of time can not take place than cataclysm, and both compare the measuring error of obtaining stable state.Simultaneously, when bigger variation takes place measured signal, also can reject artificially because the gross error that detected device and the pick-up unit time deviation when sampling produces.This detection mode is not suitable for detection of dynamic.
For the digital transformer substation merge cells, require when measuring, to accomplish each cycle 80 points of sampling, the sampled value of each transmission all must satisfy the requirement of measuring accuracy.At these characteristics,, must meet or exceed the correlation technique requirement of detected device as the standard detection device that detects merge cells.And measuring error also no longer is the total error of a device, must embody the measuring error of merge cells every bit in a period of time, and the measuring error distribution.Even fluctuation or system that the electric quantity signal of operational system has taken place in the certain limit vibrate, the every bit measuring error that merge cells transmits all must satisfy the requirement of measuring accuracy.
Summary of the invention
Technical matters to be solved by this invention is: a kind of dynamic testing method of digital transformer substation merge cells electric weight sampling accuracy is provided, but the accuracy of detection of dynamic digital transformer substation merge cells electric weight sampling.
In addition, the present invention also provides a kind of dynamic detection system of digital transformer substation merge cells electric weight sampling accuracy.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of dynamic testing method of digital transformer substation merge cells electric weight sampling accuracy is characterized in that this method comprises the steps:
A, provide a standard detection device, described merge cells and standard detection device are put at one time and respectively electric weight are measured;
B, the measurement data on the identical time point is compared, obtain the measuring error e of N time point
1, e
2, e
3..., e
N
C, obtain measuring error interval 2*a;
Wherein, a=k σ, standard deviation
K is for setting coefficient;
D, judge that the interval 2*a in above-mentioned measuring error interval is whether in the corresponding scope at interval of the measurement grade that merge cells is set; If think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
As a preferred embodiment of the present invention, described measuring error interval is
As a preferred embodiment of the present invention, in the steps A, demarcate the unit by the time and demarcate the digital transformer substation merge cells so that the measurement result of merge cells and standard detection device all at one time on.Preferably, described time calibrating unit is that the synchronous clock split-second precision is demarcated the unit.
As a preferred embodiment of the present invention, among the step C, k is more than or equal to 1, smaller or equal to 5.Preferably, among the step C, k=3.
A kind of dynamic testing method of digital transformer substation merge cells electric weight sampling accuracy, this method comprises the steps:
A, provide a standard detection device, described merge cells and standard detection device are put at one time and respectively electric weight are measured;
B, the measurement data on the identical time point is compared, obtain the measuring error e of N time point
1, e
2, e
3..., e
N
C, try to achieve the measuring error interval
Obtain the interval 2*a in measuring error interval;
Wherein,
A=k σ, standard deviation
K is for setting coefficient;
D, judge that the interval 2*a in above-mentioned measuring error interval is whether in the corresponding scope at interval of the measurement grade that merge cells is set; If think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
A kind of dynamic detection system of digital transformer substation merge cells electric weight sampling accuracy, this system comprises standard detection device, measurement data comparison module, error burst interval acquiring module, testing result discrimination module.
The standard detection device is measured electric weight respectively in order to put at one time with merge cells;
The measurement data comparison module obtains the measuring error e of N time point in order to the measurement data on the identical time point is compared
1, e
2, e
3..., e
N
Error burst interval acquiring module is in order to obtain the interval 2*a of described measuring error; Wherein, a=k σ, standard deviation
K is for setting coefficient;
The testing result discrimination module in order to the interval 2*a that judges above-mentioned measuring error interval whether in the corresponding scope at interval of the measurement grade that merge cells is set; If think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
As a preferred embodiment of the present invention, described measuring error interval is
As a preferred embodiment of the present invention, described system comprises that also the synchronous clock split-second precision demarcates the unit, in order to demarcating the digital transformer substation merge cells so that the measurement result of merge cells and described standard detection device all at one time on.
Beneficial effect of the present invention is: the dynamic testing method and the system of the digital transformer substation merge cells electric weight sampling accuracy that the present invention proposes, but the accuracy of detection of dynamic merge cells electric weight sampling is filled up the blank on this technical field.
Description of drawings
Fig. 1 is the composition synoptic diagram of dynamic detection system of the present invention.
Fig. 2 is the process flow diagram of dynamic testing method of the present invention.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
The present invention has disclosed a kind of dynamic detection system of digital transformer substation merge cells electric weight sampling accuracy, and this system can detection of dynamic digital transformer substation merge cells electric weight sampling accuracy.
See also Fig. 1, dynamic detection system 100 of the present invention comprises standard detection device 10, measurement data comparison module 20, error burst interval acquiring module 30, testing result discrimination module 40.
Standard detection device 10 is in order to measure electric weight respectively at one time with merge cells 60.Because detecting reference object (running environment of electric system during detection) is in the variation, described system can also comprise that the time demarcates the unit, demarcate the digital transformer substation merge cells, the measurement result that has guaranteed merge cells and standard detection device all at one time on.Described time calibrating unit can be the synchronous clock split-second precision and demarcates unit 50.
Measurement data comparison module 20 obtains the measuring error e of N time point in order to the measurement data on the identical time point is compared
1, e
2, e
3..., e
N
Error burst interval acquiring module 30 is in order to calculate the measuring error interval
Obtain the interval 2*a of described measuring error.Wherein, a=k σ, standard deviation
The average error of each error
K is for setting coefficient.Can be for more than or equal to 1, smaller or equal to 5 as, k.Preferably, the k value is 3.Through consulting the normal distribution density meter as can be known, at this moment, there is 99.73% measuring error to appear at the interval
Scope in.
Testing result discrimination module 40 in order to the interval 2*a that judges above-mentioned measuring error interval whether in the corresponding scope at interval of the measurement grade that merge cells 60 is set; If think that then this merge cells 60 meets its class requirement, otherwise think that this merge cells does not meet its class requirement.The required numerical value of described measurement grade is given value, can obtain according to the measurement grade of correspondence.
More than introduced the composition of the dynamic detection system of digital transformer substation merge cells electric weight sampling accuracy of the present invention, introduced dynamic testing method of the present invention below in conjunction with Fig. 2.See also Fig. 2, this dynamic testing method comprises the steps:
A, provide a standard detection device, described merge cells and standard detection device are put at one time and respectively electric weight are measured.Because detecting reference object (running environment of electric system during detection) is in the variation, described system can also comprise synchronous clock split-second precision demarcation unit 50, demarcate the digital transformer substation merge cells, the measurement result that has guaranteed merge cells and standard detection device all at one time on.
B, the measurement data on the identical time point is compared, obtain the measuring error e of N time point
1, e
2, e
3..., e
N
C, try to achieve the measuring error interval
Obtain the interval 2*a in measuring error interval.
Wherein,
A=k σ, standard deviation
K is for setting coefficient.Can be for more than or equal to 1, smaller or equal to 5 as, k.Preferably, the k value is 3.Through consulting the normal distribution density meter as can be known, at this moment, there is 99.73% measuring error to appear at the interval
Scope in.
D, judge that the interval 2*a in above-mentioned measuring error interval is whether in the corresponding scope at interval of the measurement grade that merge cells is set; If think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
In sum, the dynamic testing method of the digital transformer substation merge cells electric weight sampling accuracy that the present invention proposes, but detection of dynamic merge cells electric weight sampling accuracy is filled up the blank on this technical field.
Embodiment two
The difference of present embodiment and embodiment one is, in the present embodiment, need not to try to achieve the measuring error interval, only need obtain measuring error interval 2*a among the step C and get final product.
The dynamic testing method of digital transformer substation merge cells electric weight sampling accuracy of the present invention comprises the steps:
A, provide a standard detection device, described merge cells and standard detection device are put at one time and respectively electric weight are measured;
B, the measurement data on the identical time point is compared, obtain the measuring error e of N time point
1, e
2, e
3..., e
N
C, obtain measuring error interval 2*a;
Wherein, a=k σ, standard deviation
K is for setting coefficient;
D, if the interval 2*a in above-mentioned measuring error interval in the corresponding scope at interval of the measurement grade that merge cells is set, think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
Embodiment three
Present embodiment is introduced principle of work of the present invention.
Because detecting reference object (running environment of electric system during detection) is in the variation, in the present embodiment, the digital transformer substation merge cells is demarcated by high precision time, the measurement result that has guaranteed merge cells and standard detection device all at one time on, then the data on the identical time point are compared.Because the difference of measuring equipment, two cover sampled result still can exist certain deviation, and Here it is has produced measuring error e.And the measuring error on each Measuring Time point is all incomplete same, and the size of this measuring error is a random variation, real measuring error μ
eBe unknowable.
How to analyze the measuring accuracy of detected merge cells: find that through a large amount of measurement the distribution of this measuring error still is the followed normal distribution regularity of distribution.By the method for statistics, in N equal precision measurement of row, can obtain N measuring error e
1, e
2, e
3..., e
n..., e
N, to real measuring error μ
eThe optimum estimation value of making is exactly all e
nArithmetic mean:
Should be noted that when measuring times N for infinity,
Just the meeting convergence in (with)probability is in real measuring error μ
e
Average error
The real measuring error of having represented merge cells, but because the dynamic measurement characteristics of merge cells,
Can't embody the error profile situation of merge cells in the kinetic measurement process.With each measuring error and real measuring error μ
eCompare, can produce certain deviation.According to the characteristic of normal distribution,, can calculate the discreteness of measuring error by calculating to its standard deviation.Just so-called Bezier (Bessel) formula:
The numerical value of standard deviation is not a concrete error, and its size is characterizing the disperse degree of all measuring error.The σ value is littler, and then normal distribution curve is more sharp-pointed.The probability that this means the measuring error appearance that deviation is less is bigger, and the probability that the bigger measuring error of deviation occurs is littler.
Since be combined the unit at a high speed test accurately comparatively strict technical requirement is arranged, to the accuracy estimating of its measurement also average error just
So simple, the standard deviation of measuring error has then represented to have represented the requirement to the measuring error discreteness.Principle by normal distribution curve can know that detected error e appears at the interval
Probability be big or small closely-related with standard deviation, so often the interval limit is taken as the several times of σ, promptly be a=k σ, the value of domestic statistics routine is 3 σ.Consult the normal distribution density meter as can be known, have 99.73% measuring error to appear at the interval
Scope in.
The interval of measuring error has been represented the scope that high probability occurs that has of measuring error, and more little representative measurement result is discrete more little at interval.If this interval interval thinks that then this pick-up unit meets its class requirement in merge cells is measured the scope of grade.For the standard deviation of measuring error, existing examination criteria does not all have clear and definite regulation, and this awaits from now on the formulation to transformer station's merge cells examination criteria.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (10)
1. the dynamic testing method of transformer station's merge cells electric weight sampling accuracy is characterized in that this method
Comprise the steps:
A, provide a standard detection device, described merge cells and standard detection device are put at one time
Respectively electric weight is measured;
B, the measurement data on the identical time point is compared, obtain the measuring error e of N time point
1, e
2, e
3..., e
N
C, obtain measuring error interval 2*a;
Wherein, a=k σ, standard deviation
K is for setting coefficient;
D, judge that the interval 2*a in above-mentioned measuring error interval is whether in the corresponding scope at interval of the measurement grade that merge cells is set; If think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
2. the dynamic testing method of transformer station according to claim 1 merge cells electric weight sampling accuracy is characterized in that:
Described measuring error interval is
3. the dynamic testing method of transformer station according to claim 1 merge cells electric weight sampling accuracy is characterized in that:
In the steps A, demarcate the unit by the time and demarcate the digital transformer substation merge cells so that the measurement result of merge cells and standard detection device all at one time on.
4. the dynamic testing method of transformer station according to claim 3 merge cells electric weight sampling accuracy is characterized in that:
The unit is demarcated for the synchronous clock split-second precision in described time calibrating unit.
5. the dynamic testing method of transformer station according to claim 1 merge cells electric weight sampling accuracy is characterized in that:
Among the step C, k is more than or equal to 1, smaller or equal to 5.
6. the dynamic testing method of transformer station according to claim 5 merge cells electric weight sampling accuracy is characterized in that:
Among the step C, k=3.
7. the dynamic testing method of transformer station's merge cells electric weight sampling accuracy is characterized in that this method comprises the steps:
A, provide a standard detection device, described merge cells and standard detection device are put at one time and respectively electric weight are measured;
B, the measurement data on the identical time point is compared, obtain the measuring error e of N time point
1, e
2, e
3..., e
N
C, try to achieve the measuring error interval
Obtain the interval 2*a in measuring error interval;
Wherein,
A=k σ, standard deviation
K is for setting coefficient;
D, judge that the interval 2*a in above-mentioned measuring error interval is whether in the corresponding scope at interval of the measurement grade that merge cells is set; If think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
8. the dynamic detection system of a transformer station merge cells electric weight sampling accuracy is characterized in that this system comprises:
The standard detection device is measured electric weight respectively in order to put at one time with merge cells;
The measurement data comparison module in order to the measurement data on the identical time point is compared, obtains the measuring error e of N time point
1, e
2, e
3..., e
N
Error burst interval acquiring module is in order to obtain the interval 2*a of described measuring error; Wherein, a=k σ, standard deviation
K is for setting coefficient;
The testing result discrimination module, in order to the interval 2*a that judges above-mentioned measuring error interval whether in the corresponding scope at interval of the measurement grade that merge cells is set; If think that then this merge cells meets its class requirement, otherwise think that this merge cells does not meet its class requirement.
9. the dynamic detection system of transformer station according to claim 8 merge cells electric weight sampling accuracy is characterized in that:
Described measuring error interval is
10. the dynamic detection system of transformer station according to claim 8 merge cells electric weight sampling accuracy is characterized in that:
Described system comprises that also the synchronous clock split-second precision demarcates the unit, in order to demarcating the digital transformer substation merge cells so that the measurement result of merge cells and described standard detection device all at one time on.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411085A (en) * | 2011-07-29 | 2012-04-11 | 上海思源弘瑞自动化有限公司 | Alternating current collecting and merging device and alternating current collecting method |
| CN103558474A (en) * | 2013-11-08 | 2014-02-05 | 国家电网公司 | Novel merging unit verifying device |
| CN103995198A (en) * | 2014-05-22 | 2014-08-20 | 国家电网公司 | Analog input merging unit metering performance detection device and detection method thereof |
| CN104360298A (en) * | 2014-11-12 | 2015-02-18 | 国家电网公司 | Performance test system and method for merging unit tester |
| CN104931913A (en) * | 2015-06-03 | 2015-09-23 | 国网四川省电力公司电力科学研究院 | Method for detecting additional dynamic component of Rogowski coil electronic current transformer |
| CN113096476A (en) * | 2021-04-07 | 2021-07-09 | 国网浙江省电力有限公司检修分公司 | Debugging platform of monitoring system |
| CN116754830A (en) * | 2023-06-13 | 2023-09-15 | 武汉阿迪克电子股份有限公司 | Metering method and device of electric energy meter and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080094477A (en) * | 2007-04-20 | 2008-10-23 | 현대중공업 주식회사 | Testing device for merging unit |
| CN201184911Y (en) * | 2008-01-22 | 2009-01-21 | 湖北省电力试验研究院 | Apparatus for calibrating locale error of electronic type mutual-inductor in digitalization transforming plant |
| CN101413995A (en) * | 2008-11-28 | 2009-04-22 | 南瑞航天（北京）电气控制技术有限公司 | Apparatus for checking electronic type current mutual inductor |
-
2009
- 2009-07-31 CN CN200910055785.1A patent/CN101988957B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080094477A (en) * | 2007-04-20 | 2008-10-23 | 현대중공업 주식회사 | Testing device for merging unit |
| CN201184911Y (en) * | 2008-01-22 | 2009-01-21 | 湖北省电力试验研究院 | Apparatus for calibrating locale error of electronic type mutual-inductor in digitalization transforming plant |
| CN101413995A (en) * | 2008-11-28 | 2009-04-22 | 南瑞航天（北京）电气控制技术有限公司 | Apparatus for checking electronic type current mutual inductor |
Non-Patent Citations (5)
| Title |
|---|
| 国家质量技术监督计量司: "《测量不确定度评定与表示指南》", 30 April 2000, 中国计量出版社 * |
| 徐雁 等: "采用FPGA&DSP实现电子式互感器合并单元", 《高电压技术》 * |
| 李慎安: "采用3倍标准差的置信概率", 《城市技术监督》 * |
| 杨永标: "基于IEC61850标准的合并单元性能测试", 《电网技术》 * |
| 程良伦 等: "一种基于IEC 61850标准的嵌入式合并单元的研究与实现", 《电力系统保护与控制》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411085A (en) * | 2011-07-29 | 2012-04-11 | 上海思源弘瑞自动化有限公司 | Alternating current collecting and merging device and alternating current collecting method |
| CN102411085B (en) * | 2011-07-29 | 2013-05-01 | 上海思源弘瑞自动化有限公司 | Alternating current collecting and merging device and alternating current collecting method |
| CN103558474A (en) * | 2013-11-08 | 2014-02-05 | 国家电网公司 | Novel merging unit verifying device |
| CN103995198A (en) * | 2014-05-22 | 2014-08-20 | 国家电网公司 | Analog input merging unit metering performance detection device and detection method thereof |
| CN104360298A (en) * | 2014-11-12 | 2015-02-18 | 国家电网公司 | Performance test system and method for merging unit tester |
| CN104931913A (en) * | 2015-06-03 | 2015-09-23 | 国网四川省电力公司电力科学研究院 | Method for detecting additional dynamic component of Rogowski coil electronic current transformer |
| CN104931913B (en) * | 2015-06-03 | 2018-01-26 | 国网四川省电力公司电力科学研究院 | The method for detecting Rogowski coil electronic current mutual inductor additional dynamic component |
| CN113096476A (en) * | 2021-04-07 | 2021-07-09 | 国网浙江省电力有限公司检修分公司 | Debugging platform of monitoring system |
| CN116754830A (en) * | 2023-06-13 | 2023-09-15 | 武汉阿迪克电子股份有限公司 | Metering method and device of electric energy meter and storage medium |
| CN116754830B (en) * | 2023-06-13 | 2024-01-09 | 武汉阿迪克电子股份有限公司 | Metering method and device of electric energy meter and storage medium |
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| CN101988957B (en) | 2014-10-22 |
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Effective date of registration: 20150928 Address after: 200002 Nanjing East Road, Shanghai, No. 181, No. Patentee after: State Grid Shanghai Municipal Electric Power Company Patentee after: East China Electric Power Test & Research Institute Co., Ltd. Address before: 200437 Handan Road, Shanghai, No. 171, No. Patentee before: East China Electric Power Test & Research Institute Co., Ltd. |
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Effective date of registration: 20190408 Address after: 200002 Nanjing East Road, Huangpu District, Huangpu District, Shanghai Co-patentee after: Shanghai Hengnengtai Enterprise Management Co., Ltd. Patentee after: State Grid Shanghai Municipal Electric Power Company Co-patentee after: East China Electric Power Test & Research Institute Co., Ltd. Address before: 200002 Nanjing East Road, Huangpu District, Huangpu District, Shanghai Co-patentee before: Shanghai Sai Pu Le Power Technology Co. Ltd. Patentee before: State Grid Shanghai Municipal Electric Power Company Co-patentee before: East China Electric Power Test & Research Institute Co., Ltd. |