Firstly, you oversize the individual microinverter. For example, the Enphase S270 is a 270W micro inverter. But instead of using a 270W panel, you can use up to 359W panels (133% x 270W = 359).
Further, assuming you are using Enphase micro inverters you can export limit the whole system using the Enphase Envoy gateway.
Your installer simply configures the Envoy with the export limit and it coordinates all the micro inverters. For example you could have 10kW of microinverters export limited to 5kW if you needed to do that to keep the DNSP happy.