无功电压动态控制的分布式协同优化

DISTRIBUTED COOPERATIVE OPTIMIZATION FOR REACTIVE POWER/VOLTAGE DYNAMIC CONTROL

该文提出了一种大规模地区电网无功电压动态优化控制的数学模型。为了避免控制设备在负荷动态变化时的频繁操作,该模型以当前时段内包括能损费用和设备调整代价的运行费用最小为目标函数,实现了各时段优化的解耦,降低了计算复杂度;通过简单实用的分层分区方法和电力系统通信,全网的优化计算被处理成若干个子网分布式协同计算,降低了问题的维数。仿真算例表明:该方法可以在很短的时间内得到比集中优化方法求解质量更高的优化解。

A novel mathematical model is presented for optimal reactive power/voltage dynamic control of large-scale electric networks. To avoid excessive readjustment of the control devices with dynamic load variation, the objective function is to minimize the total operation costs, involving the costs of energy losses and the readjusting costs of the control devices, at the current interval. As a result, the optimization of each interval is decoupled and the computational complexity is reduced. In order to decrease the problem’s dimensions, the centralized optimization of the whole system is replaced by the distributed cooperative optimization of several sub- networks via simple regionalization and communication. Simulation results show that a better solution is gained in a short time by the distributed cooperative optimization method than by the centralized one.