分布式交直流混联系统及自适应动态下垂技术研究
Research on distributed AC DC hybrid system and adaptive dynamic sag technology
王林 1董雪 2张俊伟 1成月良 2张泽成 1张波1
作者信息
- 1. 国华(乳山)新能源有限公司,山东 威海 264500;山东国华时代投资发展有限公司,山东 济南 250002
- 2. 国电南瑞南京控制系统有限公司,江苏 南京 211100
- 折叠
摘要
分布式交直流混联系统采用配电多区柔性组网技术及消纳提升策略,为分布式新能并网接入与潮流优化调度提供了高效可行手段.针对源荷功率消纳需求,首先提出分布式交直流系统架构及其能量管控运行模式,然后通过分析分布式交直流系统的等效数学模型及工频与高频环流的产生机理,提出考虑功率均衡控制和高频环流抑制的自适应动态下垂控制技术.最后,在PSCAD/EMTDC中搭建了分布式交直流系统的仿真模型并进行算例验证,仿真结果表明所提技术可在保持系统稳定性基础上实现源荷消纳提升和潮流优化调控.
Abstract
Distributed AC/DC hybrid system adopts multi-zone flexible networking technology and consumption improvement strategy,providing efficient and feasible means for distributed new energy grid-connected and power flow optimization.For satisficing the demand for source&load's power consumption,firstly a distributed AC/DC system architecture and its energy operation mode were proposed.Then,by an-alyzing the equivalent mathematical model of the distributed AC/DC system and the generation mechanism of power-frequency and high-frequency circulating currents,an adaptive dynamic droop control strategy considering power balance control and high-frequency circulating current suppression was proposed.Fi-nally,a simulation model of distributed AC/DC system was built in PSCAD/EMTDC and verified through numerical examples.Simulation results showed that the proposed technology can achieve improved source load absorption and optimized power flow regulation while maintaining system stability.
关键词
分布式交直流/柔性组网/自适应动态下垂/高频环流Key words
distributed AC/DC system/flexible networking/adaptive dynamic droop/high-fre-quency circulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据