Transient stability analysis of one special type of AC microgrids with a gas reciprocating generator unit

The Journal of Engineering

Wu Jun-hui¹  Han Gui-quan¹  He Jian²  Sun Hui-wen³  Su Can³  Liu Jun³ 

[1] Pinggao Group Co. Ltd.;State Grid Beijing Electric Power Company;Xi'an Jiaotong University;

关键词: internal combustion engines;    power system transient stability;    distributed power generation;    offshore installations;    alternators;    linear machines;    stand-alone AC microgrids;    independent offshore power system;    numerical simulations;    reciprocating internal combustion engine;    linear synchronous alternator;    offshore platforms;    gas reciprocating generator unit;    transient stability analysis;   

DOI  :  10.1049/joe.2018.8487

来源: DOAJ

【 摘 要 】

More and more gas reciprocating generator units are integrated into offshore platforms, due to their compact structure and high efficiency. This paper concentrates on the transient stability analysis of one special type of AC microgrids containing a gas reciprocating generator unit. Firstly, the operation principle for the gas reciprocating generator unit is presented, which mainly consists of a reciprocating internal combustion engine and a linear synchronous alternator (LSA). Afterwards, the mathematical model for the core part of the gas reciprocating generator unit LSA is proposed, based on the principle of armature reaction in traditional synchronous and asynchronous machines. Finally, the simplified model of the independent offshore power system with a gas reciprocating generator unit is derived, and numerical simulations on the transient stability of this typical AC microgrid are performed, from which the effectiveness and correctness of the LSA model are validated. The transient stability analysis method of the independent offshore power system and the mathematical model of LSA can provide beneficial guidance for the stable operation of other types of stand-alone AC microgrids.

【 授权许可】

Unknown