利用发电机调节的稳态潮流控制

Steady-state power flow control by generator regulation

在电力系统的稳态运行中,发电机的运行方式对潮流分布起着至关重要的作用。在稳态潮流控制模型中,引入发电机的运行参数作为变量,使模型的变量数不少于方程数以保证模型的可解性;推导了微分灵敏度算法,并将其应用于变量不等式的越限处理,简化了求解过程,加快了模型的求解速度。IEEE 5和30节点系统的算例表明,在考虑电压运行范围和支路定功率传输等约束条件的情况下,模型和算法能在数次迭代运算后成功求解出系统的潮流分布。

During the steady-state operation of power system, the operating mode of generator has vital effect on the distribution of load flow. The operating parameters of generator are introduced as the variables to the steady-state power flow control model, which makes the number of the variables not less than the number of equations to ensure its solvability. The differential sensitivity algorithm is derived and applied in the limit processing of variable inequalities, which simplifies and accelerates the achievement of model solution. Case study for IEEE 5-bus and 30-bus systems shows that, with the consideration of different constraints, including voltage operating range and fixed branch power transmission, the power flow distribution can be solved in several iterations.