Reliability Analysis of Main Electrical Single-line Diagram of Yanshan Pumped Storage Power Station
The main electrical single-line diagram is essential to a power station,and its reliability directly affects safe and stable operation.Pumped storage power stations play a crucial role in the grid,so it is necessary to evaluate the reliability of main electrical single-line diagram of power station during design phase.This paper studies main indicators and methods for evaluating reliability of electrical diagram,and selects mini cut-set method as the calculation method.Combining capacity and unit configuration of power station,a comparative analysis is conducted on main electrical single-line types of the Yanshan pumped storage power station.Through reliability evaluation,a highly reliable and technological economic electrical main connection has been determined.