基于多元宇宙算法的城市超高压电缆高抗优化配置研究  

Research on High voltage Reactor Optimal Configuration of Urban EHV Cable Based on Multiverse Algorithm

作　　者：侯喆 孔志战 蒲路 贾涛荣 杨国清[2] 姚李孝[2] HOU Zhe;KONG Zhizhan;PU Lu;JIA Taorong;YANG Guoqing;YAO Lixiao(State Grid Shaanxi Electric Power Research Institute,Xi’an 710100,China;Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]国网陕西省电力公司电力科学研究院,西安710100 [2]西安理工大学,西安710048

出　　处：《电力电容器与无功补偿》2023年第3期18-25,共8页Power Capacitor & Reactive Power Compensation

摘　　要：本文针对超高压电缆接入电网所带来的容性无功过剩问题,提出了一种基于改进多元宇宙优化算法的高抗优化配置方法。首先,对原多元宇宙优化算法中的旅行距离计算公式进行改进,使其能充分反映最优个体适应值与平均适应值的偏差;其次,基于改进算法,以区域母线电压水平改善、降低网损为目标,求出区域电网各节点高抗的最优投入容量;最后,分别在2021、2025年夏季运行方式中,对该补偿方案的适用性进行了验证。研究发现,文章所提改进算法与对照算法相比,具有更快的收敛速度,并可有效避免陷入局部收敛;受电缆电容电流的影响,系统各节点电压在轻载情况下均有大幅度抬升,系统的平均电压达到362.89kV;按计算所得高抗配置方案进行无功补偿,4种运行方式下的平均电压为347.87kV,较未补偿时有大幅降低,同时减少了系统运行的有功损耗,满足了系统安全稳定运行及经济性的要求。In view of capacitive reactive power surplus due to access of extra⁃high voltage cable to the power grid,a kind of high reactor optimization configuration method based on modified multiverse algorithm is proposed.Firstly,the travel distance calculation formula of the original multiverse optimization algorithm is improved so to make it fully reflect the deviation between the optimal individual and the average adaptive value.Secondly,based on the improved algorithm and with the improvement of regional busbar voltage level and reduction of network loss as the target,the optimal input capacity of each node of regional grid with high reactor is obtained.Finally,the applicability of the compensation scheme is verified in the summer operation mode of 21 and 25 years respectively.It is found by the research the improved algorithm proposed in this paper,compared with the control algorithm,has faster convergence speed and can effectively avoid falling into local convergence.Under the influence of capacitive current of cable,the voltage of each node of the system increases greatly under light load condition,and the average voltage of the system reaches 362.89 kV.The reactive power compensation is performed in accordance with the calculated high⁃reactance configuration scheme,and the average voltage under the four operating modes is 347.87 kV,which is significantly lower than that without compensation.Meanwhile,the active power loss of the system operation is reduced and the requirements of safe and stable operation and economy of the system are met.

关 键 词：电容效应 容性无功过剩 多元宇宙优化算法 高抗配置方案 

分 类 号：TM75[电气工程—电力系统及自动化] TP18[自动化与计算机技术—控制理论与控制工程]