System protection real-time closed-loop simulation testing system and operation method thereof

Abstract

The present invention discloses a system protection real-time closed-loop simulation test system and an operation method thereof. The system comprise: a system simulation platform, which is configuredto simulate a normal operation state and failure situation of a power grid, carry out power grid analysis and calculation, output analog quantity and switch quantity information of system components,and carry out system safety and stability verification based on actions of a system protection device; a protection device tester, which is connected with the system simulation platform, and is configured to receive operation state information of system-related components; the system protection device, which is connected with the protection device tester, and is configured to collect the operation state information of the related components, determine a current operation mode and a fault type, execute corresponding emergency control measures according to the established strategy, and send theaction condition to a communication interface device; and the communication interface device, which is configured to receive the action information transmitted by the system protection device, and feed back the action condition to the system simulation platform. By running the system, "real-time closed-loop testing" can be implemented, the system is highly cost effective and easy to operate, andcan be applied to real-time closed-loop testing systems of a relay protection device, a stability control device, a macrozone spare power automatic switching device, and other devices.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof, in particular to a real-time closed-loop simulation test system for system protection and an operating method thereof. Background technique [0002] The power system is a highly complex nonlinear system, and system protection is used to ensure the safe and stable operation of the power system and the reliability of power supply. The testing work of the system protection device is very important to ensure the correctness and effectiveness of the system protection action. The testing work includes research and development test, factory joint debugging test, on-site joint debugging test, etc. System protection involves many devices, and different manufacturers use different device models, and the test methods are also different. To truly simulate the normal operation status and fault conditions of the power grid, and complete the protection test of the entire s...

AI Technical Summary

Problems solved by technology

Realistically simulate the normal operating state and fault conditions of the power grid, and complete the protection test of the entire system, with a large workload and complexity

The high complexity of system protection devices creates challenges for the entire testing effort

[0003] The test systems on the market are either expensive in software and hardware, complex in the modeling process, and cumbersome in test operations; they do not provide real-time feedback to fault simulation software based on the action of the device, and are only suitable for open-loop testing; or, the external interface hardware is immature ; Furthermore, it is only applicable to the test of single-station relay protection device, and cannot be used for the test of stability control system and wide-area standby automatic switching system

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