智能电网下分布式电源并网容量配置优化
2021-04-27魏志文
魏志文



摘 要:为促成并网型分布式电源容量的精准配置,实现电网高效能、安全的运转工作。文章系统介绍了优化配置研究,并结合并网型微电网容量的配置问题,基于分布式光伏运营模式要求,详细阐释了统购统销和自发自用、余量上网等2类并网型微电网运营模式;为提高配电网资源的使用效率和微电网孤岛能力,建立目标函数及配电网容量配置双模型,引入遗传算法求解双模型最优解,并以某岛的风光资源数据为研究实力,仿真分析了上述配置模式的应用效能,达到了预期要求。
关键词:风光智能电网;分布式电源;电源容量;配置优化
中图分类号:TM61 文献标识码:A 文章编号:1001-5922(2021)08-0102-04
Optimization of Distributed Power Generation Grid-connected Capacity Configuration in Smart Grid
Wei Zhiwen
(Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd., Dongguan 523000, China)
Abstract:In order to promote the accurate configuration of the capacity of grid connected distributed generation and realize the high-efficiency and safe operation of the power grid. This paper systematically introduces the optimization configuration research, combined with the configuration of the grid-connected micro-grid capacity, based on the requirements of the distributed photovoltaic operation mode, explained in detail the two types of grid-connected micro-grid operation modes, including unified purchase and sales, spontaneous self-use, and remaining online; in order to improve the utilization efficiency of distribution network resources and the islanding capacity of microgrid, a dual model of objective function and distribution network capacity allocation is established. Genetic algorithm is introduced to solve the optimal solution of the dual model. Taking the wind and solar resource data of an island as the research strength, the application efficiency of the above allocation mode is simulated and analyzed, and the expected requirements are achieved.
Key words:wind and solar smart grid; distributed power; power capacity; configuration optimization
0 引言
在现代科学技术支持下,将分布式电能系统将引入微型电网之中成为可能,其是人类应对能源危机和全球变暖的重要手段之一。该电力系统发电的自维持特点和特有的配送电手段,可以提高供电连续性和可靠性,加大削峰填谷力度,提高电网运营的经济性[1]。然而,美中不足的是风速和光照强度有其随机性和不稳定性,这就使得风光电源的输出不稳定,在一定程度上降低了电网对风光发电的容纳能力。因此,对于微电网而言,储能系统的精准配置是促成其高效能、可靠运行的基础。目前,微电网在解决分布式清洁能源大规模应用方面已有一定成效,但也存在既定困难,尤其是如何基于自然资源的护理配置,来促成微电网容量及储能配置的双向优化,以契合负荷要求,是其未来设计规划中的重点问题。……
