摘要
Abstract
Aiming at the problems of power factor fluctuation and high plant electricity consumption rate in on-grid PV power generation systems,this paper proposes a time-of-day dynamic collaborative control strategy.By optimizing the operating modes of inverters and Static Var Generators(SVG),the system performance is improved.The research results show that the collaborative strategy effectively stabilizes the system power factor within the range of 0.92～0.95,successfully avoiding the risk of grid assessment.Meanwhile,it reduces the plant electricity consumption rate from 5%to 2.5%,saving an average of about 720000 yuan in electricity costs per year.In addition,the average daily operating time of the SVG is shortened by 10 h,and the equipment life is extended by 20%to 30%.In terms of economic benefits,the collaborative strategy reduces the initial investment by 15%to 20%by decreasing the redundancy configuration demand of SVG capacity,and can reduce economic losses by about 3.2 million yuan per year throughout the life cycle.In terms of technological innovation,the collaborative strategy introduces a threshold algorithm,which significantly improves the system's response speed and adaptability,providing a solid theoretical and practical support for the efficient operation of new PV stations.关键词
光伏发电系统/逆变器/静止无功发生器/最大功率点跟踪/功率因数/厂用电率/DCS系统Key words
PV power generation/inverter/SVG/MPPT/power factor/plant electricity consumption rate/DCS system分类
信息技术与安全科学
