﻿ 船用柴油发电机组暂态电压紧急控制方法仿真
 舰船科学技术  2022, Vol. 44 Issue (15): 109-112    DOI: 10.3404/j.issn.1672-7649.2022.15.022 PDF

1. 南开大学，天津 300071;
2. 许昌职业技术学院，河南 许昌 461000

Simulation of emergency control method for transient voltage of marine diesel generator sets
ZHOU Nan1,2, LI Ya-nan2
1. NanKai University, Tianjin 300071, China;
2. Xuchang Vocational Technical College, Xuchang 461000, China
Abstract: Diesel generator set is an important part of the ship's power system. Whether its operation is stable or not is directly related to the operation safety and reliability of the entire system. When the system fails, transient voltages are generated, which adversely affects the operation of the generator set. Because the transient voltage appears for a relatively short time, if the conventional control method is adopted, the expected control effect may not be achieved. In order to maintain the normal operation of the marine diesel generator set, an emergency control method is proposed for the transient voltage stability problem, and the effectiveness of the emergency control method is verified by using the simulation model. The results show that the transient voltage of diesel generator sets can be controlled by the method proposed in this paper.
Key words: ship     diesel generator set     transient voltage     emergency control     simulation
0 引　言

1 船用柴油发电机组仿真模型的构建 1.1 模型构建思路

1.2 模型的构建过程

 图 1 船用柴油发动机组电压实测误差曲线 Fig. 1 Measured error curve of voltage of marine diesel engine set

 图 2 船用柴油发动机组负荷电流误差实测曲线 Fig. 2 Measured curve of load current error of marine diesel engine set

 图 3 船用柴油发动机组抖动频率误差实测曲线 Fig. 3 Measured curve of jitter frequency error of marine diesel engine set

2 船用柴油发电机组暂态电压紧急控制方法仿真 2.1 暂态电压的稳定时域

 $\frac{{{\rm{d}}x}}{{{\rm{d}}y}} = f(x,y) \text{。}$

 图 4 船用柴油发电机组经典励磁系统结构示意图 Fig. 4 Structural diagram of classical excitation system of marine diesel generator set

2.2 暂态电压稳定仿真

2.3 暂态电压紧急控制

 图 5 两种不同方式下系统故障后的电压转差率变化曲线示意图 Fig. 5 Schematic diagram of voltage slip change curve after system failure in two different ways

 图 6 四种不同状态下系统故障后的感应电动机转差率变化曲线示意图 Fig. 6 Schematic diagram of the change curve of induction motor slip after system failure under four different states

 图 7 三种不同控制方式下的故障节点电压曲线示意图 Fig. 7 Schematic diagram of fault node voltage curve under three different control modes

3 结　语

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