True type power distribution network multi-state complex fault simulation test platform and test method thereof

Abstract

The invention discloses a true type power distribution network multi-state complex fault simulation test platform and a test method thereof. The test platform includes a network frame, a complex faultsimulator, an adjustable load and a power distribution network equipment access device, the network frame includes an overhead wire network frame, a cable network frame and an overhead cable mixed network frame, the overhead wire network frame includes overhead wires, the cable network frame includes cable lines, the overhead wires and the cable lines are connected with the fault simulator, the adjustable load, and the power distribution network equipment access device correspondingly, and neutral point grounding devices are installed on the overhead wires and the cable lines correspondingly.The invention further discloses the test method of the test platform. According to the true type power distribution network multi-state complex fault simulation test platform and the test method thereof, an actual physical model using the real electric transmission line, power distribution equipment and typical network frame structures is constructed, the power distribution network operation state is really simulated, and various power distribution network complex faults are reproduced on the actual physical model, so that the accuracy of function verification of power distribution automationterminal equipment is improved.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a real-type distribution network multi-state complex fault simulation test platform and a test method. Background technique [0002] At present, the performance indicators of power distribution terminals are mainly tested and verified by simulating typical fault characteristics of distribution network. The main difference between different test and verification methods of power distribution The simulation system classification is mainly divided into three types: the first is the database type fault characteristic signal simulation test system; the second is the physical low-voltage power distribution network simulation test system; the third is the real-time digital simulation system (RTDS) simulation test system; The three methods are to carry out the performance test and verification of the distribution terminal by simulating the fault characteristic signal of the ...

AI Technical Summary

Problems solved by technology

[0006] (3) The physical low-voltage distribution network simulation test system reduces and weakens the characteristic signals under the actual distribution network fault, and may lose some meaningful characteristic signals, and cannot fully and truly simulate the actual distribution network;

[0007] (4) Real-time digital simulation system (RTDS) simulation test system, because the distribution network simulation test system of the real-time digital simulation system uses digital modeling and simulation methods, it cannot completely and accurately simulate the situation of real distribution network equipment, and will ignore transient characteristics and other influencing factors, at the same time, due to the limitation of the simulation step size, there is a certain limit to the frequency range of the transient signal provided

[0008] Due to the above defects, the above three combined testing and verification systems cannot completely simulate the real fault operation state of the distribution network, which makes the functional test and

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