| Active distribution network is a distribution network with distributed generation, energy storage, electric vehicle and demand side response. The active power distribution network can be aimed at the actual operation state of the power system, and it can adjust the network, the generation and the load adaptively according to the economic security. The active power distribution network is built on the communication network which is matched with its function. Power line communication using the existing power line as a data transmission channel, with the advantages of small equipment investment and low maintenance costs.This thesis presents the multi mode fusion communication of power line which is the combination of PLC and TWACS, in order to guarantee the reliable communication of the carrier. This thesis also carries on the research of the network optimization algorithm, on the basis of analysis of the communication architecture and communication requirement of the active power distribution network, aiming at the problem that the path searching instruction is not reliable in the carrier communication network. According to the distributed power supply characteristics of frequent movement and harmonic in active distribution network, a method for data demodulation in time domain of modulated signal by time frequency analysis is presented. In this way, it is able to self-adapt the frequency of the source voltage phase difference of the TWACS in the active power distribution network, and improve the effect of the demodulation in the active power distribution network. Finally, this thesis analysis the identification of the distribution network topology and the ability of real time data acquisition of terminal data based on multi mode fusion communication for power line in active distribution network for distribution network reconfiguration and its application in data mining, in order to provide a new idea for the study of active power distribution network in the future. |
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