Analysis on real-time bottleneck factors influencing power system recording system

The performance of power recording system is restricted by many factors so that it is difficult to improve the real-time performance of recording system. For this reason, to improve real-time performance of power recording system such measures as utilizing improved link-layer based network transmission technique and directly accessing network controller via application layer to avoid the redundant operation in data packaging and unpacking are proposed. By means of accurately measuring processing time of interface data within the recording system the main restrictive factors, including bus accessing speed among processors, forming efficiency of record files, storage of fault files and network transmission speed, are revealed, and the network transmission speed is the very bottleneck factor influencing the real-time performance of the recording system. Using the measures such as postposition of storage function, adjusting parallel bus access mode and optimizing forming logic of recorded fault file, the influence of these factors on real-time performance of the recording system is mitigated. Actual testing results verify the effectiveness and real-time performance of the improved recording system.