A Synchronous Alignment Point Vector Calculation Method for Dual-terminal Ranging of Wave Recording Data
A technology of wave recording data and double-terminal distance measurement, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of high risk, low accuracy, and low efficiency, and achieve good compatibility, save workload and the effect of time
Active Publication Date: 2022-06-21
WUHAN SHUNCHENG TECH
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Problems solved by technology
Among them, the vectors used in the double-ended ranging formula are all extracted from the sine wave, but the sine wave may not provide accurate vectors. There are ready-made corresponding vectors, and the vector information required for double-ended ranging is missing. At this time, it needs to be processed. The existing technology can only continuously adjust the synchronization alignment point, and adjust once every calculation. This method is efficient Low, and the risk is high; if you don’t want to calculate the adjustment every time, you have to use interpolation, digital signal processing (fitting), and resampling methods to ensure the same sampling rate, but this method changes the original wave recording data, resulting in reliable results reduced
If the median method is used to calculate the synchronous alignment point vector, it is only an approximate calculation, and the accuracy is still low
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[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Specific steps are as follows:
[0023] A method for calculating a synchronous alignment point vector for double-ended ranging of wave recording data of the present invention comprises the following steps:
[0024] S1. Use the method of synchronizing and aligning the wave recording data on both sides to find the first synchronization alignment point of the wave recording data of the M side and the N side;
[0025] like figure 2 A and A' are the synchronous ali...
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The present invention proposes a synchronous alignment point vector calculation method for double-end distance measurement of wave recording data, which solves the problem that the sampling point on one side does not coincide with the sampling point on the opposite side at the same time due to the inconsistent sampling rate of the double-end wave recording data. The problem that caused the lack of synchronous alignment point vector information to complete double-ended ranging. The calculation vector of this method is not affected by the inconsistency of the sampling rate of the wave recording data. It does not need to repeatedly adjust the synchronization alignment point, and does not need to modify the original wave recording data by interpolation or resampling. At any sampling point or between sampling points of the skimming wave data, the vector of the synchronous alignment point can be calculated according to the method described in the present invention to complete the double-ended ranging without repeatedly searching for a new synchronous alignment point.
Description
technical field [0001] The invention relates to the field of power system fault recording double-end ranging, in particular to a method for calculating a synchronous alignment point vector for double-end ranging of recorded wave data. Background technique [0002] Transmission lines are the main carrier for the construction of my country's power grid. They have the characteristics of wide distribution of nodes and dense line corridors. Using the recorded wave data provided by the substations on both sides of the line to carry out double-end positioning calculation for accurate fault location helps to find fault points in time and quickly. Repair, improve the work efficiency of electric power workers, ensure the reliability of power supply and the safety of social and people's livelihood. [0003] The principle of double-ended ranging based on recorded wave data is as follows: figure 1 When any kind of short-circuit fault occurs at point k, record the fault phase voltage meas...
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IPC IPC(8): G01R31/08
CPCG01R31/088G01R31/085
Inventor 廖晓春高学强曾令森王慧琼颜丽刘雅兰邓碧青常靖松徐志奇李婷婷
Owner WUHAN SHUNCHENG TECH