A substation relay protection simulation test system and its simulation test method

Abstract

The invention discloses a simulation testing system and method for transformer substation relay protection. The simulation testing system comprises a computer control system, a data communication system and a tested device, wherein calculation and output are separated by arranging a calculation module on the computer control system and arranging a real-time output module on the data communication system, time marks are marked on data after the data are calculated through the calculation module so that the real-time output module can receive the calculated data with the time marks in advance and output the data to the tested device according to the time marks on time, and when a circuit breaker trip signal and a circuit breaker switching signal are received, the available time of the calculation module for calculating a new admittance matrix and calculating the data produced when the structure of the system suddenly changes can be greatly prolonged, the requirement for hardware performance is lowered, cost is reduced, and instantaneity is improved.

Description

technical field [0001] The invention relates to a substation relay protection simulation test system and a simulation test method thereof, belonging to the technical field of electric power distribution automation. Background technique [0002] In recent years, the rapid development of computer technology, information processing technology and network communication technology has had a huge impact on the substation automation system. With the gradual formation of UHV, large-capacity, and ultra-large system grids, higher and more urgent requirements are put forward for grid security, stability, reliability, control, and information interaction. As a node in the power grid, the substation mainly completes the function of power transmission and transformation through primary equipment and lines, and the monitoring and protection of primary equipment requires automated secondary equipment. Therefore, in terms of substation operation management control, its technical level contin...

AI Technical Summary

Problems solved by technology

However, there is currently no smart substation test simulation system that meets the needs of on-site testing, which is mainly reflected in two aspects:

[0010] 1) Due to the different mechanism of development, the current common relay protection test device for power system based on IEC61850 protocol can only perform open-loop basic function test, and does not have the ability to conduct system closed-loop simulation test and overall function test of power system equipment

[0011] 2) Although large-scale real-time simulation equipment has the function of closed-loop testing, due to its large size and high price, it is not conducive to large-scale application and promotion on site, and research work can only be carried out in laboratories of powerful scientific research institutions; However, the relatively weak computing power of the miniaturized simulation test device and the complexity of the simulation model form a contradiction.

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