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A dynamic equivalent approach based on coherency is researched for dynamic simulation test in ±800 kV DC transmission project from Yunnan to Guangdong in China. To reduce the full system, the dynamic equivalent model of large-scale power system based on coherency is established, in which the identification of coherent generator groups, coherent buses reduction, aggregation coherent generator parameters...
We present a novel method for placing PMU in power systems based on power system intrinsic characteristics. In the method power system was first analyzed for find out the major or critical interchanges and major load areas, major control systems, critical equipments and power plants in the power system. The overall PMU facilities should provide comprehensive information of line flows, bus conditions,...
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