With the continuous expansion of the construction scale of new energy bases

the lack of dynamic reactive power support from conventional power sources will further deteriorate the static voltage stability of new energy bases. Therefore

a kind of

one main and one auxiliary

oriented static voltage stability evaluation method for new power systems is proposed

with

L

index as the main index and

L-Q

sensitivity index as the auxiliary index. This method

based on the known system grid structure and basic power flow

uses the

L

index as the objective to judge the voltage stability of the system

and auxiliary index to reflect the advantages and disadvantages of the reactive power compensation scheme. On the basis of meeting stability of system

the optimal reactive power compensation point is determined as the decision-making scheme. The results show through simulation verification based on the actual power grid in Qinghai that when compensating reactive power compensation equipment with the same capacity for nodes with higher sensitivity index

the improvement effe

ct on the static stability of the system is the best

and the degree of decrease in the

L

index is highest.