Brand-new distribution room identification technology based on characteristics of power lines
An identification technology, power line technology, applied in the field of low-voltage carrier energy meter automatic reading control and energy information release system
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[0012] At present, the power supply of the site area is transformed from the 10KV / 6KV distribution network, as shown in Figure 1. When the load current passes through links such as power transmission, transformation and distribution, voltage drops and voltage losses will inevitably occur on the impedance of these links. If the load and the transmission line are ideally purely resistive, the in-phase load voltage phase of each station area is the same, as shown in Figure 2(A).
[0013] However, due to the complex structure of the distribution network and uneven load distribution, the load and transmission line are not ideal pure resistance, so the in-phase load voltage of each station area will have a phase offset phenomenon, and the offset is generally greater than 150us, as shown in Figure 2 (B ) Shown.
[0014] The present invention relies on TCC081C and TCC082C chips derived from Qingdao Dingxin. The carrier signal of each phase is completely synchronized with the zero crossing...
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