The Whole Transmission Ability Analysis Of Anhui Power Grid After Ring Rejection Based On BPA

Power flow calculation is not only a basic electric calculation method in steady-state research of power plant, but also the most important one. Based on power system calculation analysis software BPA, this paper initially estimates the whole transmission ability of Anhui grid according to the real power flow calculation result, and further using N-1 and N-2 break line to check the anti-jamming ability. After this, this paper puts forward a kind of voltage level reference under N-1 situation, which based on power flow calculation and continuation power flow, the voltage level reference can be fast and conveniently achieved and can quickly judge the impact degree of different nodal voltage under different break line situation. After mainly analyzing the real grid power flow distribution, this paper brings forward the concept of weak area and weak degree. The dividing of weak area can directly show the key power net monitoring area on system geographical diagram, which has practical significance to operation and monitoring of power grid.