摘要
新能源发电渗透率提高常规机组开机减少,电力系统中转动惯量和阻尼减小,已投运的电流源型新能源发电技术无法为系统频率和电压波动提供有效的支撑,为了提高电力系统转动惯量和阻尼水平,采用了虚拟惯量、一次调频、调压等主动支撑能力控制,本文针对强弱两种电网并网场景开展研究,搭建含运达和远景风机机群、阳光光伏发电、阳光和远景储能、许继SVG等多制造商的新能源场站RTDS仿真模型,进行了场站级主动支撑仿真验证,发现在多种能量源下弱电网虚拟惯量控制存在参数适应性问题,可能引起次同步振荡,而快速调压是保证弱电网运行稳定的关键措施。
The increase in the penetration rate of new energy power generation has led to fewer conventional units being operated,reducing the inertia and damping in the power system.The current-source type new energy power generation technology already in operation cannot effectively support frequency and voltagefluctuations in the system.To enhance the inertia and damping levels of the power system,active support capabilities such as virtual inertia,primary frequency regulation,and voltage regulation have been adopted.This paper conducts research on two grid-connected scenarios:strong and weak grids.A RTDS simulation model for a new energy station is built,incorporating multiple manufacturers’equipment including Yunda and Envision wind turbine clusters,solar photovoltaic power generation,Envision and Yunda energy storage,and XJ SVG.Active support simulation verification at the station level is conducted,revealing that virtual inertia control in weak grids under various energy sources has parameter adaptation issues,which may cause sub-synchronous oscillations.Rapid voltage regulation is a critical measure to ensure stable operation in weak grids.
作者
李胜男
何鑫
李浩洋
邓灿
钱思帆
Li Shengnan;He Xin;Li Haoyang;Deng Can;Qian Sifan(Electric Power Research Institute of Yunnan Power Grid Corporation,Kunming 650217,China;Yunnan Power Grid Co.,Ltd.,Dali Power Supply Bureau,Dali 671000,China)
出处
《云南电力技术》
2025年第4期26-34,共9页
Yunnan Electric Power
关键词
主动支撑
电压支撑能力
虚拟惯量
多种能量源
active support
voltage support capability
virtual inertia
multiple energy sources
