由于孤岛运行的汽轮发电系统输出功率调节响应较慢，带脉冲功率负载会造成输出电能频率和电压较大的凹陷和超调，甚至导致系统不稳定。本文将超级电容储能应用于汽轮发电系统，组成汽轮机-超级电容混合发电系统。继而提出混合发电系统的频差功率协调控制方法。通过超级电容储能单元的高功率动态响应弥补汽轮机输出功率动态响应低的问题，使系统实时处于瞬时功率平衡状态，保证输出电能频率和电压的平稳，增强汽轮发电系统对脉冲功率负载的适应能力。最后建立仿真模型对所提控制算法的有效性进行验证。
In view of the impact load problems in the traditional micro gas turbine (MGT) power generation system, this paper analyzes its working mechanism and finds the reason lies in the slow response of the micro turbine output power adjustment. In order to make up for the shortage of the instantaneous output power of micro turbine, the method of instantaneous power fast control is proposed. Control algorithm of instantaneous compensation power is raised by power response prediction of MGT. The high power dynamic response of supercapacitor energy storage can compensate low dynamic response problem of MGT output power, so the instantaneous power of the system is real balance to ensure that the DC bus voltage is smooth and adaptability of MGT power generation system is enhanced for impact load. Finally, the correctness and feasibility of the proposed control strategy are verified by simulation results.
2024,46(13): 107-113 收稿日期：2023-09-04
DOI：10.3404/j.issn.1672-7649.2024.13.019
分类号：TK221
基金项目：国家自然科学基金资助项目（52177211）；黑龙江省博士后科研启动基金资助项目（LBH-Q20020）
作者简介：王岩(1984-),男,高级工程师,研究方向为燃气轮机控制、试验研究等
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