Single-phase grounding simulation modeling system of power distribution network
A single-phase grounding, simulation modeling technology, applied in information technology support systems, measurement of electricity, measurement of electrical variables, etc., can solve problems such as poor applicability of distribution networks, and achieve the effect of strong applicability and wide simulation range
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[0015] Such as figure 1 As shown, a single-phase grounding simulation modeling method for a distribution network is characterized by:
[0016] (1) Combined simulation modeling of lumped and distributed parameters
[0017] Since there are many branches in the distribution network, it is not realistic to reflect all branches in the simulation model, so it is necessary to merge and simplify the complex network branches to obtain figure 1 Equivalent model. In terms of model selection: because the length of the distribution line does not exceed 15km, the π model is sufficiently accurate; the transformer uses three-phase dual-winding transformer (35kV main transformer Y / △ connection, 10kV distribution transformer △ / Y connection, 10kV grounding transformer Y / △Connection); The load uses a constant power star connection load, and at the same time, a balanced load is selected in order to simplify the simulation.
[0018] (2) Typical model structure of single-phase grounding in distribution...
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