Electricity net safety stable controlling system testing method

Abstract

This invention relates to a test method for the safety stable control system of network, which collects voltage of each node and current curve data under various disturbances to be processed by test fault scene data process software to get node data files of networks under various disturbances in a same format, which are input into the test instruments of the corresponding place of the nodes, a GPS calibrates the time and triggers them, disturbance data for selecting test instruments are configured and output to the network safety stable control devices to carry out synchronous dynamic test in different places to them.

Description

technical field [0001] The invention relates to a test method for a power system safety and stability device, in particular to a test method for a power grid safety and stability control system. Background technique [0002] The power system enters an emergency state or an extreme emergency state due to disturbances. In order to prevent system stability from being damaged, operating parameters seriously exceeding the specified range, and accidents further expanding to cause large-scale blackouts, emergency control must be carried out. The safety and stability control system of the regional power grid is an important means to ensure the safe and stable operation of the power system. According to the type of disturbance and the mode of operation, a certain number of generating units or loads are cut off, which can effectively maintain the stability of the power grid and prevent the expansion of accidents. The control strategy table is the basic ba...

AI Technical Summary

Problems solved by technology

[0007] 1) Use the real-time digital simulation system RTDS to simulate the actual power grid, and form a closed-loop system with the stability control system to conduct real-time closed-loop simulation tests, which can simultaneously verify the effectiveness of the strategy and the rigor of the search and matching logic. The disadvantage of this method is that the RTDS equipment Completely dependent on imports, the price is expensive, and the existing RTDS scale can only focus on the simulation test of smaller systems, and cannot be used for on-site testing

[0008] 2) Using multiple relay protection testers to output current, voltage, and switching values ​​to simulate the operating conditions and disturbances of the power grid, and to conduct open-loop testing of the stability control system is a commonly used method at present. This method is simple, easy to implement, and can solve The problem of off-site testing in field tests is that geographically dispersed and electrically independent testers cannot accurately simulate the dynamic process of mutual influence between nodes in the interconnected grid, that is, synchronous dynamic simulation cannot be performed

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