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A power control method for an asynchronous power generation system of a DC power station

A power generation system and power control technology, applied in control systems, control generators, AC network circuits, etc., can solve the problems of incomplete consistency of line parameters, large output power, large difference in power distribution of generator sets, etc., to achieve The effect of automatic equalization distribution

Active Publication Date: 2022-05-31
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The incomplete consistency of the line parameters leads to a large difference in power distribution between the generator sets running in parallel, and there may even be a situation where one generator set has a larger output power while the other generator set works in a light electric mode

Method used

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  • A power control method for an asynchronous power generation system of a DC power station
  • A power control method for an asynchronous power generation system of a DC power station
  • A power control method for an asynchronous power generation system of a DC power station

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Embodiment Construction

[0027] Below in conjunction with the accompanying drawings and embodiments, the present invention is clearly and completely described.

[0034] The DC power station system equipment is highly concentrated in the DC main switchboard, the line distribution parameters are small, and the power of the generator set is small.

[0037] U

[0040] Then, the DC voltage on the output side of the generator set G2 ramps up to the DC bus voltage reference value of the droop control.

[0045] G

[0048] U

[0049] The subsequent control process is exactly the same as the unit start-up process, and will not be repeated. Since the total power of the load is constant, the

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Abstract

The invention discloses a power control method for an asynchronous power generation system of a direct current power station, which adopts a direct current current equalizing loop combined with droop control, and divides the power control process of a generating set into two processes of "coarse" adjustment and "fine" adjustment. Power adjustment control; the present invention is aimed at the asynchronous power generation system of the DC power station. The droop control is based on the relationship curve between the DC bus voltage and the DC current, combined with the DC current sharing loop as an additional adjustment link, and the adjustment is achieved by adjusting the output voltage of the DC side of the generator set. The purpose of the output power is to realize the power balance control between the parallel operation generator sets of the asynchronous power generation system of the DC power station.

Description

A power control method for an asynchronous power generation system in a DC power station technical field The present invention relates to a kind of power control method of asynchronous power generation system of direct current power station, is applicable to onshore direct current microgrid, All applications involving the power control of the asynchronous power generation system of the DC power station, such as the ship DC power station. Background technique In recent years, the direct current power station system has obtained relatively fast development as a kind of new-type ship power grid composition form, The number of ships, ship types and power station capacity have all made breakthroughs. Different from the AC power grid system, the main power grid of this system adopts the DC power system, Without the restriction of frequency, the generator speed can break through the limit of 3000rpm, and the unit can use variable speed power generation technology to The po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46H02P9/30H02J3/36
CPCH02J3/466H02P9/305H02J3/36Y02E60/60
Inventor 陈坤李争光胡传西
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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