To improve the coordinated clearing efficiency of energy, frequency regulation and reserve markets, a day-ahead multi-market clearing method involving distributed photovoltaic-storage aggregators is proposed. Different from traditional sequential clearing and uniform regulation pricing, a comprehensive regulation performance index is introduced, and the regulation mileage bid is modified by the analytic hierarchy process so that high-performance regulation resources are prioritized. A coupling constraint between regulation and reserve capacities is established to avoid repeated ancillary-service capacity reservation. On this basis, a security-constrained unit commitment (SCUC) model is used to minimize the total cost, and a security-constrained economic dispatch (SCED) model is used to optimize dispatch and clearing prices. It is shown by case studies that system operation cost can be reduced and coordinated operation of photovoltaic-storage resources and thermal units can be improved.