基于最优系统能效的配电网规划方法

Distribution network planning based on optimal system efficiency

在当今的配电网规划中,提升能效是最重要的目标之一。现有的配电网规划模型大都以经济性为目标。文中从配电网系统能效入手,提出基于最优系统能效的配电网规划模型,选取节点煤耗作为入手点,综合考虑配网网损、分布式电源规划等能效因素,可以较为全面地反映配网系统能效。在模型求解中,文中使用改进的粒子群(PSO)算法,在算法中加入惯性权值,可以在提高算法收敛速度的同时保证寻优结果的准确性,并给出了辐射网形态修正策略,确保规划结果的合理性。选取IEEE 33节点算例进行模型和算法验证,计算结果表明,文中的模型求解算法收敛快,稳定性高,配电网规划结果合理,有效提升了配网系统的能效水平,验证了文中配电网规划方法的有效性。

Nowadays it is the primary objective to improve energy efficiency of distribution network planning.However,it is focused on economic efficiency by most traditional models of distribution network planning.Therefore,a model of distribution network planning for optimal energy efficiency in power system is proposed.On the basis of the data for coal consumption,the factors are discussed such as the power loss of distribution network and the planning of distributed enregy,and these factors reflect comprehensively the energy efficiency of distribution network system.An improved algorithm of particle swarm optimization(POS)is used for the solution process in the proposed model by adding inertia weights,and this algorithm improves the convergence speed the accuracy at the same time.A radiation network shape strategy is also carried out to correct results individually.IEEE 33-bus examples are selected for verification.The calculation results show that the model with fast convergence and high stability,effectively improves the energy efficiency level of the distribution system,and it makes sure that the results of distribution network planning are reasonable.The present method is verified for its effectiveness of distribution network planning.