Test Method Based on Clock Synchronization Protocol of Power Industry Network Measurement and Control System

Abstract

The invention relates to a test method based on network measurement and a control system time synchronous protocol in power industry. The method comprises the following steps of testing IEEE1588 (Institute of Electrical and Electronics Engineers 1588) protocol consistency, testing IEEE1588 protocol hardware time mark accuracy and testing IEEE1588 protocol time synchronization accuracy. The step of testing the IEEE1588 protocol consistency comprises the following steps of testing PTP (Precision Time Protocol) default attribute values, testing a route delay mechanism, testing BMC (best master clock) algorithm-data set comparison algorithm and testing state decision algorithm, wherein the step of testing the route delay mechanism comprises the following steps of testing a report ignoring other delay mechanisms and testing a peer to peer delay mechanism. The step of testing the IEEE1588 protocol hardware time mark accuracy comprises the following steps of measuring master clock and transparent clock transmission delay and measuring transparent clock and slave clock transmission delay. By the method, the problem on interoperability of equipment manufactured by different manufacturers when a power system applies an IEEE1588 protocol can be solved, the actual parameters of key functions of the equipment can be acquired, and basis for evaluating the performances of the equipment is provided.

Description

technical field [0001] The invention belongs to the IEEE1588 protocol testing technology of the power system. Various types of equipment in the power system can realize equipment network time synchronization through the IEEE1588 protocol, and can standardize the IEEE1588 protocol through the IEEE1588 protocol test carried out based on the IEEE1588 protocol configuration set (IEEE PC37.238) test method applications in power systems. The invention particularly relates to a test method based on a clock synchronization protocol of a power industry network measurement and control system. Background technique [0002] The full name of the IEEE1588 protocol is "Precision Time Protocol, PTP for network measurement and control systems". Typical areas of application are laboratory or product measurement and control systems, industrial automation, power systems or telecommunication systems as well as distributed motion control systems involving multiple sensors, actuators, instrumenta...

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Problems solved by technology

[0011] The biggest feature of the PTP protocol is that the time stamp is calibrated by the time stamp generator at the physical layer, and the hardware "time stamp" function is realized, which eliminates the ms-level delay of the protocol stack and the operating system, and improves the time accuracy, such as image 3 As shown, it is also based on this that the function of hardware time stamping determines the performance of the PTP protocol, and the current test method cannot evaluate this function

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