EN基于Matlab/Simulink仿真的H级燃机发电机静态变频启动装置谐波分析
Harmonic Analysis of H Class Gas Turbine Generator Starting With Static Frequency Converter Based on Matlab/Simulink Simulation
- 发电技术 2020年41卷第6期 页码：697-705
- 作者机构：
1.上海闵行燃气发电有限公司, 上海市 闵行区 200245
2.土耳其 EMBA 公司, 上海市 黄浦区 200010
3.上海电力大学环境与化学工程学院, 上海市 杨浦区 200090
- 作者简介：
[ "胡可嘉(1987), 男, 硕士, 工程师, 从事燃机电厂电气专业管理工作, hukj@mh.shanghaipower.com" ]
[ "高立新(1967), 女, 副教授, 主要研究方向为电力安全工程, glx2010@shiep.edu.cn" ]
- 基金信息：国家自然科学基金项目(51571140)
DOI：10.12096/j.2096-4528.pgt.19131
中图分类号： TK477;TM611.31收稿：2020-01-03，
纸质出版：2020-12-31
- 稿件说明：
移动端阅览
胡可嘉, 张军, 张天宇, 等. 基于Matlab/Simulink仿真的H级燃机发电机静态变频启动装置谐波分析[J]. 发电技术, 2020,41(6):697-705.
Kejia HU, Jun ZHANG, Tianyu ZHANG, et al. Harmonic Analysis of H Class Gas Turbine Generator Starting With Static Frequency Converter Based on Matlab/Simulink Simulation[J]. Power Generation Technology, 2020, 41(6): 697-705.
胡可嘉, 张军, 张天宇, 等. 基于Matlab/Simulink仿真的H级燃机发电机静态变频启动装置谐波分析[J]. 发电技术, 2020,41(6):697-705. DOI： 10.12096/j.2096-4528.pgt.19131.
Kejia HU, Jun ZHANG, Tianyu ZHANG, et al. Harmonic Analysis of H Class Gas Turbine Generator Starting With Static Frequency Converter Based on Matlab/Simulink Simulation[J]. Power Generation Technology, 2020, 41(6): 697-705. DOI： 10.12096/j.2096-4528.pgt.19131.
摘要
随着燃气-蒸汽联合循环发电技术不断发展，发电机容量和参数要求不断提升。H级燃气-蒸汽联合循环发电机组的发电机需具备更为稳定、高效、安全的启动要求。为此，静态变频装置（static frequency converter，SFC）启动技术发展也迎来新的挑战。SFC启动技术精准、灵活、高效控制的同时，产生的谐波分量会对电源系统的电能质量有一定的影响。通过Matlab/Simulink建立H级燃机发电机SFC启动仿真模型，模拟发电机启动过程，观察系统参数变化，分析谐波分量占比。仿真结果显示，采用SFC启动可通过调节输出电流的频率和幅值，柔性提升发电机的转速，发电机启动受冲击小。但SFC内置大量非线性电气元件，会使大量谐波分量涌入系统之中，影响电能质量。因此，提出2种抑制谐波影响的SFC接入优化方案，即增设输入电抗器方案和输入电源改接发电机机端方案。通过仿真模型证实了2种方案都可有效抑制或减少谐波影响，满足电能质量要求。
Abstract
With the development of gas-steam combined cycle power generation technology
the requirements of generator capacity and parameters are constantly improving. The generators of H class gas-steam combined cycle generator unit need to have more stable
efficient and safe starting requirements. It also stimulates improvement of static frequency converter (SFC) technology facing more challenge. SFC technology has displayed its advantages in controlling accurately
flexibly and efficiently. Meanwhile
SFC brings more harmonic components to influence the quality of power system. SFC start-up simulation model of H class gas turbine generator was built by Matlab/Simulink to simulate the generator start-up process
the evolvement of various parameters was researched and the proportion of harmonic components during the generator starting was analyzed. The simulation results show that the SFC start-up can increase the speed of the generator flexibly by adjusting the frequency and amplitude of the output current
and the impact of the generator start-up is small. However
large numbers of nonlinear electrical components built in SFC will cause higher proportion of harmonic components appear in power system and influence power quality. Therefore
two optimization schemes for SFC access were proposed to suppress harmonic effects
which are the scheme of adding input reactor before SFC and the scheme of changing generator end of input power supply. Through the simulation
it was proved that the two schemes can effectively suppress or reduce the harmonic effect and meet the requirements of power quality.
关键词
Keywords
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