ADDITIONAL REQUIREMENTS FOR PV INVERTERS NECESSARY TO MAINTAIN UTILITY GRID QUALITY IN CASE OF HIGH PENETRATION OF PV GENERATORS

摘要

Currently the total power of PV-generators in the built environment is small compared to the power of the distribution transformer. With the steady growth of PV installations, the penetration of PV-generators in the built environment will grow as well. This will lead to new phenomena, which may eventually result in grid instabilities. Whether or not these phenomena will occur depend on the high frequency parameters of the inverter(s), the load and the utility grid. This paper describes a way to model the harmonics behaviour in a utility grid. Next a simple test method is presented that can be used to measure the high frequency parameters of the loads and the inverters accurately.