Synchronization method and synchronization device for data acquisition of merge unit for intelligent substation

A technology for smart substations and unit data, applied in electrical components, time division multiplexing systems, multiplexing communications, etc. Effect

Active Publication Date: 2016-11-09
XUJI GRP +3
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a synchronous method and device for data acquisition of an intelligent substation merging unit to solve the defects of unreliable and unstable synchronous sampling in the existing synchronous method using sampling pulses

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  • Synchronization method and synchronization device for data acquisition of merge unit for intelligent substation
  • Synchronization method and synchronization device for data acquisition of merge unit for intelligent substation
  • Synchronization method and synchronization device for data acquisition of merge unit for intelligent substation

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Embodiment Construction

[0025] The technical solution of the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0026] Embodiment of the Synchronization Method for Data Acquisition of Smart Substation Merging Units of the Present Invention

[0027] The synchronization method for data acquisition of the smart substation merging unit of this embodiment includes: when the ADC plug-in of the merging unit receives the synchronization information sent by the CPU plug-in, it generates a local time stamp through a constant temperature crystal oscillator, which is called the ADC local time stamp; when the ADC plug-in receives If the received synchronization information is invalid, self-time counting is performed according to the local timestamp of the ADC.

[0028] In the above method, the synchronization information is a sampling pulse. When the synchronization information is valid, the sampling pulse is sent to the ADC plug-in according to the CPU plug-in, an...

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Abstract

The invention relates to a synchronization method and synchronization device for the data acquisition of a merge unit for an intelligent substation. The method includes the following steps that: when the ADC (analog-to-digital converter) plug-in of the merging unit receives synchronization information sent by a CPU plug-in, a local time stamp is generated through a thermostatic crystal oscillator, wherein the local time stamp is named as an ADC (analog-to-digital converter) local time stamp; and when the synchronization information received by the ADC plug-in is invalid, self-timekeeping counting is carried out according to the ADC local time stamp. The device includes a CPU plug-in and an ADC plug-in; the CPU plug-in comprises a synchronization information generation module and a synchronization information sending module; the ADC plug-in comprises a synchronization information analysis module and a synchronization timekeeping module; and the CPU plug-in is communication connection with the ADC plug-in. According to the synchronization method and synchronization device for the data acquisition of the merge unit for the intelligent substation of the invention, self-timekeeping counting can be carried out according to synchronization time under a condition that sampling pulses are burred or lost due to interference, and therefore, sampling data error or loss in a short term can be avoided, and the stability and reliability of sampling are enhanced with cost not increased.

Description

technical field [0001] The invention relates to the field of electric power system automation, in particular to a method and device for synchronizing data acquisition of an intelligent substation merging unit. Background technique [0002] In recent years, with the promotion of intelligent substations, the analog quantity merging unit has occupied an increasing market share. As a link between the traditional transformer and the intelligent substation, the analog quantity merging unit plays a role of linking the past and the future. Compared with some current problems and immature technologies of electronic transformers, the analog merging unit directly collects the analog signals of traditional transformers and merges and sends the data, which has many technical advantages. [0003] At present, the commonly used implementation method of the analog merging unit is generally to realize the acquisition and conversion of analog data through a special ADC plug-in, and then send ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0661
Inventor 牟涛杨智德赵应兵李刚朱建斌尹明郝威李超田萍周丽娟金全仁
Owner XUJI GRP
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