Insulation online high-precision synchronization measurement and time marking method based on master station GPS

A high-precision synchronization and time-stamping technology, applied in radio-controlled timers, instruments, etc., can solve the problems of not considering accumulated errors, increased power consumption, complex structure, etc., to avoid management problems, reduce power consumption, and simplify the structure. Effect

Active Publication Date: 2016-04-20
DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER +1
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Problems solved by technology

[0003] In order to solve the problem that the existing method of realizing station synchronization by wireless communication does not consider the influence of the cumulative error generated between the local clocks of each sub-station on the follow-up synchronization work, and the

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  • Insulation online high-precision synchronization measurement and time marking method based on master station GPS
  • Insulation online high-precision synchronization measurement and time marking method based on master station GPS
  • Insulation online high-precision synchronization measurement and time marking method based on master station GPS

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Embodiment Construction

[0032] The insulation online high-precision synchronous measurement and time stamping method based on the master station GPS, this method is realized by the following steps:

[0033] 1) The composition of the wireless synchronous measurement system:

[0034] The wireless synchronous measurement system adopts the structure of 1 main station and n sub-stations. The main station and each sub-station form a wireless synchronous measurement system through wireless channels; the main station and each sub-station are connected with nRF905 wireless communication modules; the main station has GPS Clock and local clock; each substation only has a local clock; among them, the local clock of the master station is composed of an external calendar clock chip and a microsecond-level timer, and the local clock of the sub-station is composed of an FPGA built-in calendar clock and a microsecond-level timer ; The sampling clock and marking time of the master station and the slave station are pro...

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Abstract

The invention relates to an insulation online high-precision synchronization measurement and time marking method based on master station GPS, for solving the problem of influences on subsequent synchronization work due to neglect of accumulated errors generated between local clocks of each substation by use of a conventional method of realizing site synchronization through wireless communication and the problems of too high cost, increased power consumption and complex structure caused by a conventional GPS synchronization method. The insulation online high-precision synchronization measurement and time marking method based on the master station GPS is realized through the following steps of: 1, formation of a wireless synchronous measurement system: the wireless synchronous measurement system employs a structure composed of one master station and n substations, and the master station and each substation form the wireless synchronous measurement system through wireless channels; 2, synchronous starting of sampling; 3, synchronization of sampling clocks; and 4, calibration and correction of the local clocks. The method provided by the invention is applied to the wireless synchronous measurement system.

Description

technical field [0001] The invention relates to a wireless synchronous measurement system, in particular to an insulated online high-precision synchronous measurement and time marking method based on a master station GPS. Background technique [0002] The wireless synchronous measurement system (WSN) is widely used in the measurement of electrical insulation performance. Its measurement principle is as follows: measure the leakage current of the medium and the bus voltage through each sub-station, and collect the measurement data to the main station through the wireless channel, and then pass Calculate the phase difference between the leakage current and the bus voltage to evaluate the insulation performance of the medium. In the actual work of the wireless synchronous measurement system, its various stations (master station and each substation) need to work together to obtain useful information, so strict synchronization between the various stations is required. In order t...

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Application Information

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IPC IPC(8): G04R20/02G04R20/14
CPCG04R20/02G04R20/14
Inventor 赵锐钟睿罗文杰孙洁李尚柏
Owner DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER
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