Power distribution truth value simulation test method and power distribution truth value simulation test device

Abstract

The invention relates to a power distribution truth value simulation test method and a power distribution truth value simulation test device. The power distribution truth value simulation test device comprises a voltage regulator, a boosting transformer, a switch, a series reactor, a ground capacitor, a computer measurement and control analysis unit, a power distribution network ground fault unit dG, a power distribution network phase fault unit xG, a power distribution product test unit SP and the like. The voltage regulator and the boosting transformer are used for boosting to a nominal voltage of a power distribution network, an operation mode and parameters of a simulation power distribution network are changed and excited to generate an overvoltage for experimental study on production mechanisms and protective measures of overvoltage in the power distribution network; by means of the power distribution network ground fault unit dG and the power distribution network phase fault unit xG, experimental study on fault mechanisms, fault processes, fault recovery and fault treatment measures of the power distribution network can be realized; by employing of the power distribution product test unit SP, dynamic tests and fault tests of the tested network are simulated according to power distribution truth values, and correctness of technical parameters and relevant functional parameters of power distribution products is analyzed by the computer measurement and control analysis unit.

Description

technical field [0001] The invention belongs to the field of distribution network test, and is mainly used for distribution network steady state and transient state test, overvoltage mechanism test, distribution network fault test and distribution product development, verification and demonstration test. Background technique [0002] The distribution network is a neutral point non-effectively grounded system, and the probability and level of internal overvoltage are relatively high. It is necessary to study the mechanism and protective measures of internal overvoltage; because the distribution network network is large, the insulation level is low and it is easy to Affected by lightning overvoltage, it is necessary to study the mechanism of lightning overvoltage on the distribution network; the distribution network is directly facing the user's power grid, which has very high requirements for power supply reliability and requires the use of a large number of power distribution...

AI Technical Summary

Problems solved by technology

Carrying out various tests on the distribution network is the main method of research, and the effect is the most direct and real if all kinds of tests are carried out directly on the distribution network, but this will have a greater impact on the safe and stable operation of the distribution network. This is unacceptable to the power system and the majority of power users, and some tests are even unacceptable

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