300 MVA脉冲发电机组滑差方式起动过程研究

介绍了300 MVA脉冲发电机组的滑差装置。对机组采取滑差方式的起动过程进行了分析和等效建模。根据机组实际起动过程电气波形,利用非线性规划模型,建立了滑差装置液体电阻等效仿真模型,并代入机组参数对起动过程进行仿真,仿真结果和实际波形吻合,验证了模型的正确性。在此基础上,为了使机组的转速达到额定转速,提出在滑差装置液体电阻低位时并入两级固体金属电阻后短接的方案,给出了两级固体金属电阻的阻值等理论参数,并通过仿真验证了方案的可行性。建立的仿真模型可以作为研究不同参数、不同控制策略下的机组起动过程动态特性的重要工具。

Research on Startup Process of 300 MVA Motor Generator with Slip Mode

The slip device of 300 MVA motor generator (MG) was introduced. The startup process of the MG with slip mode was analyzed and modeled. According to the actual electrical waveforms, the equivalent model of the liquid resistor of the slip device was established by using the nonlinear programming model. And the MG startup process was simulated by using these models with the parameters of MG. The simulation results basically tallied with the measured waveforms. The feasibility of the models was verified. On this basis, in order to reach the rated speed of the MG, the scheme of short connection after incorporating twostage solid metal resistor into the liquid resistor was put forward. The theoretical parameters such as the resistance of the twostage solid metal resistor were given, and the feasibility of the scheme was verified by simulation. The models could be used as an important tool to study the dynamic characteristics of the MG startup process under different parameters and different control strategies.