A real-time closed-loop simulation test system for system protection and its operation method

Abstract

The invention discloses a real-time closed-loop simulation test system for system protection and its operation method, including: simulating the normal operation state and fault situation of the power grid, performing power grid analysis and calculation, outputting the analog value and switch value information of system components, and acting on the system protection device A system simulation platform for system security and stability verification on the basis; a protection device tester connected to the system simulation platform and receiving information about the operating status of relevant system components; connected to a protective device tester and collecting information about the operating status of related components to identify the current operating mode and fault type , execute the corresponding emergency control measures according to the established strategy, and send the action status to the system protection device of the communication interface device; receive the action information transmitted by the system protection device, and feed back the action status to the communication interface device of the system simulation platform. Running this system can realize "real-time closed-loop test", which is cost-effective and easy to operate. It can be applied to real-time closed-loop test systems for devices such as relay protection, stability control, and wide-area standby automatic switching.

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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