The condition monitoring data exchange between the condition acquisition controller（CAC） and condition acquisition gateway（CAG）is the basis of vertical interconnection of condition information in the condition monitoring system with hierarchical and distributed structure for power transmission and transformation equipment. Based on an analysis of the remote communication protocol for power systems and distributed component technology， the implementation method based on the simple object access protocol（SOAP） of distributed data exchange， the modeling method and process based on Web services descriptive language（WSDL） of data exchange services for condition monitoring are given. A testing system for condition monitoring data exchange based on the above method and model has been developed，and put through performance and load test with the cycle upload service of condition monitoring data for CAC of power transformation equipment as an example. The validity and feasibility of the proposed models and methods have been proved.