Data compression and decompression methods for intelligent power grid communication and intelligent power grid communication system
A smart grid communication and data compression technology, applied in the direction of digital transmission system, transmission system, electrical components, etc., can solve the problem of low intelligent communication rate
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Embodiment 1
[0018] Embodiment 1. This embodiment is a smart grid communication system, which is mainly used for electronic meter reading. The communication system uses power line carrier to send the data of the meter to the billing center. When using power line carrier communication, the power line zero-crossing point is generally used A frame of data is transmitted at any time. At present, the bandwidth is relatively narrow, and generally each frame of data is about ten bytes. The system includes a sending end and a receiving end, the sending end communicates with the receiving end through a power line carrier, the sending end includes a source coding module, and the receiving end includes a sink decoding module.
[0019] The sender needs to send communications about the three rate periods 00:00-08:00, 08:00-14:00, and 14:00-00:00. Currently, when communicating with these three rate periods, the transmitted It is BCD code, BCD code data is 00 00 08 00 08 00 14 00 14 00 00 00, the sending...
Embodiment 2
[0030] Embodiment 2 transmits the three-phase real-time voltage 230V 228V 229V, and the source encoding module and the sink decoding module perform the following compression and decompression processes respectively:
[0031] Three-phase real-time voltage, 230V 228V 229V, BCD data frame 02 30 02 28 02 29, compressed data 02 A8 30 28 29, compression rate 16.7%.
[0032] Embodiment 2 transmits the real-time power total / peak / peak / flat / valley of four rates, 8758.65 / 0.00 / 7235.32 / 1523.33 / 0.00, and the source encoding module and the sink decoding module perform the following compression and decompression processes respectively:
[0033] Four-rate real-time power total / peak / peak / flat / valley, 8758.65 / 0.00 / 7235.32 / 1523.33 / 0.00, BCD code data frame 00 87 58 65 00 00 00 00 00 72 35 32 00 15 23 33 00 00 00 00, The compressed data 00 E0 77 00 87 58 65 72 35 32 15 23 33, the compression ratio is 35%.
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