Alternating current collecting and merging device and alternating current collecting method
A technology of AC acquisition and acquisition method, which is applied in the field of power system and can solve problems such as complex algorithms and limited practical applications
Active Publication Date: 2013-05-01
上海思源弘瑞自动化有限公司
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Problems solved by technology
However, the technology algorithm is complex and requires multi-source data, and it can only be realized at the interval layer
These limit the practical application of this method
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[0026] Such as figure 1 As shown, this embodiment includes: an AC acquisition module 100, a data collation module 200, a data transmission module 300 and a time synchronization module 400, wherein: the AC acquisition module receives the original analog signal and outputs a digital acquisition signal to the data collation module 200, and the data collation The module 200 receives the secondary sampling pulse output by the time synchronization module 400, and outputs standard format data to the data sending module 300, and the data sending module 300 outputs the data message to the process layer Ethernet.
[0027] The AC acquisition module 100 changes the input original analog signal into a digital signal, and the AC acquisition module 100 includes: an AC converter unit 101, an analog-to-digital conversion unit 102 and a sampling data storage unit 103 connected in series in sequence, wherein: AC conversion The converter unit 101 and the analog-to-digital conversion unit 102 tran...
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The invention relates to an alternating current collecting and merging device which can exclude wrong sampled values in a self-adaptive manner and an alternating current collecting method and belongs to the technical field of power systems. The device comprises an alternating current collecting module, a data managing module, a data sending module and a time synchronization module, wherein an analog-digital transformation module is used for receiving original analog signals and outputting digital collected signals to the data managing module, the data managing module is used for receiving a secondary sampling pulse sequence output by the time synchronization module and outputting data in the standard format to the data sending module, and the data sending module is used for sending the data to a process level Ethernet network. By adopting the device and the method, distortion in ground sampling can be simply and effectively prevented, the application of a spacer layer device can be prevented from being affected, and the spacer layer device can be conveniently applied to the alternating current collecting and merging device.
Description
technical field [0001] The present invention relates to a sampling device and method in the technical field of electric power systems, in particular to an AC acquisition and combination device and acquisition method with adaptive elimination of wrong sampling values. Background technique [0002] The intelligent substation automation system requires the merging unit (Merging Unit) to send the sampling value message in accordance with the IEC61850-9-2 standard protocol. The work of the substation's protection, measurement and control and other interval layer devices is based on this sampling value. Therefore, the correctness of the sampling value sent by the merging unit is crucial to the correct work of these devices. [0003] However, it is difficult to ensure that the value of each sampling point is correct. Due to the interference of the equipment from the field environment or other special conditions, it is inevitable that a certain point will have a large value in the...
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IPC IPC(8): G01R19/25G08C19/00H04L29/08
Inventor 矫坚张沛超夏传红
Owner 上海思源弘瑞自动化有限公司