20kv medium voltage emergency generator car

Abstract

A 20-kV medium-voltage emergency power generation vehicle comprises a semitrailer chassis, a compartment, a fuel tank, a cooling and noise reduction system and the like and is characterized in that a 0.4-kV power generator set and a 0.4-kV / 20-kV boost transformer are arranged in the compartment; an iron core of the power generation vehicle adopts an iron core with low magnetic flux density; a binding post of the power generation vehicle adopts a plug-in connector with an insulation protection jacket; the surface of a coil of the power generation vehicle is sprayed with an insulation material; insulation protection baffle plates are arranged at the front part and the rear part of the power generation vehicle; two independent closed cabins are arranged in the compartment; the fuel tank is arranged in one of the independent closed cabins; and a 20-kV medium-voltage switch cabinet is arranged in the other independent closed cabin. The insulation partition plates are arranged on the two side compartment walls of the emergency power generation vehicle, and the technical difficulty of the prior art is overcome; and with the combination of the 0.4-kV power generator set and the 0.4- / 20-kV boost transformer, the 20-kV emergency power generation vehicle is provided, and the problem of emergency power protection of a 20-kV distribution network is solved.

Description

technical field [0001] The invention relates to an emergency power generation equipment, in particular to a 20kV medium-voltage emergency power generation car. Background technique [0002] The power grid system is generally generated by a power plant and boosted to 330kV ~ 500kV, and then remotely transmitted to the hub of the power receiving area, and then stepped down and distributed step by step. The high voltage power transmission is generally 110kV ~ 220kV, and the medium voltage power distribution is mainly 35kV and 10kV, low-voltage power distribution is mainly 400V / 220V. [0003] 400V / 220V is suitable for the vast number of end users, 35kV is mainly used in rural power grids and large industrial and mining enterprises, 10kV is the conventional voltage level of urban distribution network, through the 10kV distribution network, the power is distributed to the distribution transformers of various communities and units It is 400V / 220V. The power supply radius of the 1...

AI Technical Summary

Problems solved by technology

[0009] 1) At present, the distribution transformers in the society are all used for step-down, not for step-up; the problem in the case of step-up is that it is difficult to eliminate harmonics caused by frequency conversion and rectification equipment in the load, which will cause transformer iron The loss is too large;

[0010] 2) The size of the carriage is subject to the limit value of the automobile standard, which is in contradiction with the requirements of the external dimensions and protection distance of the large-capacity transformer.

[0011] 3) Transformers are designed for fixed installation, which contradicts with vehicle vibration;

[0012] 4) Explosion-proof requirements for 20kV high-voltage switch system contradict with vehicle fuel environment

[0013] The prior art has not yet disclosed a solution that can solve the above four technical problems

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