摘要
为实现微型燃气轮机"以热定电"的特点,在联网运行时对每台燃气轮机采用PV控制。为实现微型燃气轮机的即插即用,孤岛运行时采用基于P/f和Q/V下垂特性的对等控制,在负荷变化时仅利用各台微型燃气轮机本地信息进行协调控制分配负荷,并满足负荷对电压和频率的要求。为了保证直流侧储能设备的运行安全,在有功下垂控制中,增加了功率输出限制环节。通过对微网孤岛运行模式和联网运行模式之间切换、孤岛模式下增减负荷达到燃气轮机出力极限的仿真和分析,证明了燃气轮机微网在联网与孤岛运行方式下控制方法的可行性和限制功率输出环节的有效性。
When grid-connected,every microturbine adopts P/V control method based on the characteristics of determining power by heat.To facilitate microturbine pluging and playing,every microturbine adopts peer control based on P/f and Q/V droop characteristics when the microgrid islands,which can assign load power only based on the local measurements and maintain voltage and frequency at required range.The minimum and maximum output limits are enforced by adding function in P/f droop control for the safety of energy storage.The microgrid operation variations between grid-connected and islanding,the load changes and even one microturbine output reaching the limit in islanding mode are analyzed.The simulation results show the control method and the power output limiter validity.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2010年第2期513-518,共6页
High Voltage Engineering
基金
国家高技术研究发展计划(863计划)(2008AA05Z216
2007AA05Z249)~~
关键词
微型燃气轮机
微网
联网运行
孤岛运行
PV控制
下垂控制
有功限制
microturbine microgrid grid-connected operation islanding operation PV control droop control active power limiter
