Test system of distribution automation feeder terminal

Abstract

The embodiment of the invention relates to the technical field of power distribution automation, and discloses a test system of a distribution automation feeder terminal. The test system comprises a power distribution network simulation device and a signal conversion device. The power distribution network simulation device is used for constructing a simulation mathematical model according to the topological structure of an actual power distribution network, and the mathematical model is used for simulating faults in the actual power distribution network, simulating simulation signals generated by monitored simulation modules in the power distribution network simulation device and outputting the simulation signals to the signal conversion device. The signal conversion device converts the simulation signals into test signals compatible with a distribution automation feeder terminal and transmits the test signals to the distribution automation feeder terminal, and the distribution automation feeder terminal generates a control protection instruction for protecting the simulated power distribution network according to the test signals. By adopting the test system in the embodiment, the accuracy of FTU testing can be improved, and the requirement of FTU testing for the environment is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of power distribution automation, and in particular to a test system for a feeder terminal of power distribution automation. Background technique [0002] Distribution automation feeder terminal unit (Feeder Terminal Unit, FTU) mainly monitors the 10kV switch on the column, and completes functions such as telemetry, remote signaling, remote control and fault detection. Execute the commands issued by the power distribution master station, adjust and control the power distribution equipment, and realize functions such as fault location, fault isolation, and rapid restoration of power supply in non-faulty areas. It plays an important role in the stable operation of the distribution network system and promotes a more perfect management of the distribution network system. Due to the large number of FTUs in the distribution network, the complex system, various control and protection func...

AI Technical Summary

Problems solved by technology

[0003] However, at present, a simple relay tester is usually used to test the control and protection functions of the FTU, but the relay tester cannot accurately simulate the fault characteristics of the actual distribution network, resulting in the inability to comprehensively test the control and protection functions of the FTU

Another test method is the joint debugging method with the switch body: that is, use a large current generator to simulate the high-voltage line current through the main circuit of the switch, and execute the opening and closing commands through the FTU to generate actions on the body to control the distribution feeder terminal FTU. Test, but this method has high requirements on the test environment, the equipment is bulky, and it is not easy to operate

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