摘要
随着配电网中分布式电源比例不断增加,对配电网的运行管理模式提出了更高的要求,为了能够保证配电网运行的可靠性和经济性,针对含分布式电源配电网的特点,基于鸽群优化算法,提出这类配电网的状态估计方法。以配电网中分布式电源和负荷的有功功率为状态变量,以状态变量与量测量差值的平方和最小作为目标函数,以潮流方程作为等式约束,以状态变量上下限值作为不等式约束,构建了含分布式电源配电网状态估计优化模型。采用鸽群优化算法和遗传算法分别求解了所构优化模型的最优解,算例表明,依据磁场、太阳和地标模拟鸽群自主归巢行为的鸽群优化算法,能获得比遗传算法估计精度更高的状态估计结果,可为含分布式电源配电网状态估计提供一个新途径。
With the increasing proportion of distributed power supply in distribution network,higher requirements are put forward for the operation and management mode of distribution network in order to ensure the reliability and economy of distribution network operation.According to the characteristics of distribution network with distributed generation and based on the pigeon-inspired optimization algorithm,a state estimation method for such distribution network is proposed.In the distribution network,active power of distributed power and load are used as state variables.The objective function is to minimize the squared difference between the state variable and the quantity.Taking power flow equation as the equality constraint and the upper and lower limit of state variables as inequality constraints,a state estimation optimization model of distribution network with distributed generation is constructed.The optimal solution of the constructed optimization model is solved by using the pigeon-inspired optimization algorithm and genetic algorithm.The example shows that the pigeon-inspired optimization algorithm is based on magnetic field and that the sun and landmark to simulate the independent homing behavior of pigeons.This method can get more accurate state estimation results than genetic algorithm,and providing a new way for the state estimation of distribution network with distributed generation.
作者
白晨
姚李孝
曹雯
BAI Chen;YAO Lixiao;CAO Wen(School of Water Resources and Hydroelectric Engineering,Xi’an University of Technology,Xi’an 710048, China;School of Electronic Information,Xi’an Polytechnic University,Xi’an 710048,China)
出处
《西安理工大学学报》
CAS
北大核心
2018年第3期294-298,共5页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(61707141)
关键词
含分布式电源配电网
状态估计
鸽群优化算法
distribution network with distributed generation
state estimation
pigeon-inspired optimization algorithm
