Abstract:

According to the power quality indicator requirements in the specification of gridconnected PV plants from the state grid corporation,an evaluation method of power quality for gridconnected PV plants based on GAHP (Group Analytic Hierarchy Process) is proposed.On one hand, opinions of several experts with similar interests are gathered and the synthetic weights of each indicator are produced.On the other hand, the effective range of each indicator is divided into five grades and the probability of measured data is calculated as objective weight.At last,a comprehensive gridconnected PV power station for power quality is assessed according to GAHP subjective weights and objective weights of measured data, which can provide decision for PV plants' gridconnecting.

Key words: group analytic hierarchy process;gridconnected PV station;power quality