Voltage curve similarity calculation method considering reference transformer area
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A technology of similarity calculation and reference station area, which is applied in the field of distribution station operation, can solve problems such as calculation of similarity of voltage curves that do not involve reference station areas, and achieve the effect of correct calculation
Pending Publication Date: 2022-07-05
STATE GRID HUBEI ELECTRIC POWER RES INST +3
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[0005] Although the above-mentioned patents involve the verification of the line-change relationship of the station area, they all require additional installation devices to realize, and do not involve the calculation of the similarity of the voltage curve considering the reference station area
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Embodiment example 1
[0063] Implementation Case 1: A Reference Station
[0064] In step A, the 10-day distribution transformer outlet voltage data of 13 stations on a certain 10kV line was obtained from the relevant system, as shown in Table 1, which is an example data of 1 day.
[0065] Table 1
[0066]
[0067] In step B, the acquired voltage data is preprocessed, and the sign matrix is obtained as shown in Table 2:
[0068] Table 2
[0069]
[0070]
[0071] In step C, a matrix C is formed according to the calculation result in step B, as shown in Table 3:
[0074] According to matrix C, since B NP4 =10. Therefore, NP4 can be determined as the reference station area.
[0075] In step D, according to the reference station area determined in step C, the s...
Embodiment example 2
[0078] Implementation Case 2: Two Reference Station Areas
[0079] Step A: Obtain the 5-day distribution transformer outlet voltage data of 8 stations on a 10kV line from the relevant system, as shown in Table 5 for 1-day example data.
[0080] table 5
[0081]
[0082] In step B, the acquired voltage data is preprocessed, and the sign matrix is obtained as shown in Table 6:
[0083] Table 6
[0084]
[0085]
[0086] In step C, according to the calculation result in step B, a matrix C is formed, as shown in Table 7:
[0087] Table 7
[0088] Taiwan area name logo TQ1 4 TQ2 4 TQ3 4 TQ4 4 TQ5 4 TQ6 4 TQ7 4 TQ8 4
[0089] due to B TQ1 = 4, which is less than the number of data days 5, so the station area TQ1 is first determined as the first reference station area, and then the second reference station area is determined.
[0090] Calculate the correlation coefficient of the voltage curves of other s...
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Abstract
The invention provides a voltage curve similarity calculation method considering a reference transformer area, comprising the following steps: A, obtaining transformer area related data including a corresponding relation between a 10kV line and a transformer area, a transformer area name, a transformer area address code, and transformer area outlet 96-point voltage data; b, on the basis of the 96-point voltage data, obtained in the step A, of the distribution transformer outlet, preprocessing the data to form a transformer area mark matrix; c, determining a reference transformer area according to the transformer area mark matrix preprocessed in the step B; and D, calculating the voltage curve similarity of the transformer area according to the reference transformer area determined in the step C. According to the voltage curve similarity calculation method considering the reference transformer area, the transformer area voltage curve similarity can be calculated when no 10kV line voltage curve exists, and a data basis can be provided for transformer area line change relation verification.
Description
technical field [0001] The invention relates to the technical field of operation of a distribution station area, in particular to a method for calculating the similarity of a voltage curve considering a reference station area. Background technique [0002] The distribution network line variation relationship is very important basic data. When the line variation relationship is wrong, it will directly affect the line loss calculation, power outage management and the operation and maintenance of the distribution network line. Time-consuming and difficult to ensure real-time performance. The operation of the distribution network will generate a large amount of operation data, which can be used for automatic verification of the relationship between the distribution network lines by analyzing and mining these data. [0003] When carrying out the verification of the distribution network line variable relationship, it is generally necessary to calculate the similarity between the ...
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