Detection of the point of voltage collapse using the FSQV method

This paper presents and analyses a new method for the detection of the point of collapse and a new index for the definition of the distance of the voltage collapse point. This paper demonstrates that a point of a Newton-Raphson power flow becomes singular when the full sum of the partial derivate of the reactive power equations in relation to the voltage level is approximately constant. Numerical experiments using standard IEEE 14 and 57 bus systems show that the proposed method can compute the voltage collapse point using several different scenery of load increase, line or generator outages. The methodology proposed may be easily implemented in any power flow program.