大型发电机组失磁保护对机网协调安全影响的仿真计算研究

Emulate Numeration Research on the Coordinate Safety Influence between Unit and Grid by Field Loss Protection of Generators

发电机与电网之间的相互协调是厂网分开后的首要问题。由于大型发电机组的运行状况对电网影响甚大,因此需要对发电厂涉网保护的定值进行充分的分析和论证。文中以某发电厂发电机失磁保护为例,通过建立其数学模型,仿真分析了其保护定值对机组和电网的影响,并提供相应的论证。

The coordination between the generating units and the power grid is very important under reformation of units and grid. The operation condition of large generating units will come into being much influence upon grid. So setting of the plant's protection which influence to net must be analyzed and demonstrated. In this article, the influence of some generator's field loss protection upon the generating unit and grid had analyzed. By installation of mathematic model and simulating analyze, the setting of protection influence to units or grid and corresponding argumentation had also been provided