1000kV紧凑型输电线路导线排列方式优化

特高压紧凑型输电技术对于压缩输电线路走廊宽度、提高输电线路自然输送功率、降低单位输送容量的工程造价具有重要价值。作为紧凑型技术的重要方法,导线排列方式的优化有利于进一步提高线路输送容量,改善输电线路周围的电磁环境。提出了一种1 000 k V紧凑型输电线路的导线排列方式优化方法,该方法以提高自然功率和单位截面积自然功率为目标,并考虑工程实际约束,建立多目标不等式约束的非线性优化模型,通过模型求解得到导线优化的初始方案。在初始方案的基础上,采用粒子群优化方法对初始方案的子导线排列进行了非对称优化,对比分析了优化前后导线的电磁环境因素以及线路的电气参数,并利用有限元分析方法对优化排列后的导线表面电场强度进行了仿真验证。

Optimizing the Conductors Configuration in 1000 kV Compact Power Transmission Line

The Ultra-High Voltage compact transmission technology is of great significance to compressing the line width of corridor, upgrading the transmission capacity of unit corridor width and lowering the construction costs on transmission capacity of unit transmission capacity. And the conductor arrangement optimization is of crucial importance to reducing the electromagnetic effects of the Ultra-High Voltage compact transmission line on the environment and upgrading the transmission capacity of the conductor. This paper proposes a method to optimize the conductor arrangement of 1000 kV compact transmission line, which aims at improving the natural power and the natural power of unit cross-sectional area. A multi-objective inequality constrained nonlinear optimization model is established, which considers the engineering practical constraints. On this basis, further considering the surface field strength distribution of the optimized conductor, the method of particle swarm optimization is adopted for improvement. Then comparison and analyses of the conductor surface field strength and the electrical parameters of the transmission line before and after improvement are presented. Finally, simulations have been done with the finite element analysis method, demonstrating the validity of the proposed method.