Photovoltaic power generation plays a vital role in China's clean energy transition, yet challenges such as module mismatch, inefficient maintenance, and safety risks hinder its operational efficiency and reliability. To address these issues, this paper proposes an intelligent operation and maintenance system based on a cloud-edge-end collaborative architecture. The system integrates, edge data forwarders, smart gateways, and software platform. Through hierarchical coordination, the solution enhances power generation efficiency, reduces maintenance costs, and ensures compliance with safety standards. Engineering validation demonstrates a measurable improvement in system performance, highlighting the framework's potential to advance the digital transformation of PV power stations.