Abstract The link is connected between the power system transmission lines. There are different types of power system, tie line: single loop or loop; Ac power lines, dc or ac and dc transmission line, transmission line is in use. According to the size of the transmission power limit, can be divided into the strong relation and the weak link. Power system communication link voltage grade of much the same as the backbone network of power system voltage level. In operation, must pay attention to solve the power fluctuation, low frequency oscillation, link the problem such as security measures. Tie line power control and adjustment is a involving multiple regions, multiple power generation unit, the electric unit, is a blend of power and economic complex problems. In order to get the tie line power interconnected power grid security and stability and optimal benefits, should consider different geographical characteristics of the tie line power generating set difference of the contribution and benefit, the benefit of the coordination of regional power grid, construct the new tie line power control strategy. Based on the network loss minimum and the maximum power supply ability goal, this paper proposes a optimization method to control the transmission power of tie lines by the end of the power grid.
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2015, Vol. 16 
