A tidal power generator set and its generator steering control monitoring method

Abstract

The invention discloses a tidal current energy generator set and a generator rotation direction controlling and monitoring method thereof. The tidal current energy generator set is of a horizontal axis type, and a variable-pitch generator positive and negative rotation system with the pitch ranging from 0 degree to 270 degrees is adopted. The method includes the steps that if the mean direction offlow within a short period of time is between 0 degree and 180 degrees and the pitch angle of the generator set is between -5 degrees and 95 degrees, a master control system gives an instruction to aconverter to control the rotation speed direction of a generator to be the anticlockwise positive direction, and if the mean direction of flow within a short period of time is not between 0 degree and 180 degrees and the pitch angle of the generator set is between 175 degrees and 275 degrees, the master control system gives an instruction to the converter to control the rotation speed direction of the generator to be the clockwise negative direction; and further judgment can be made by comparing a generator positive and negative rotation instruction given by the master control system with thegenerator rotation direction actually fed back by a generator encoder. The tidal current energy generator set and the generator rotation direction controlling and monitoring method solve the problemof automatically controlling and monitoring the generator rotation direction of the tidal current energy generator set during tide rising, tide falling and slack tide, safe and stable running of the generator set is achieved, and the tidal current energy generator set and the generator rotation direction controlling and monitoring method are suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of tidal current energy generation, in particular to a tidal current energy generating set and a generator steering control monitoring method thereof. Background technique [0002] Tide is a periodic seawater fluctuation phenomenon formed by seawater under the gravitational action of the moon and the sun. The seawater tide is accompanied by two forms of movement: one is the vertical rise and fall of seawater caused by high tide and ebb tide, which is the tide referred to; the other is the level of seawater Movement is fashion. The energy carried by tides is potential energy; while the energy carried by currents is kinetic energy. [0003] The power generation of tidal current energy has the following characteristics: tidal current energy is a renewable clean energy; the energy density of tidal current energy is much higher than that of wind energy; It can generate electricity without building a dam like a ...

AI Technical Summary

Problems solved by technology

[0004] Existing tidal current energy generating sets generally have no yaw system, and mainly use unidirectional rotating power generation equipment, among which, unidirectional rotating power generation equipment only captures the energy of one-way tidal current, which will waste tidal current energy resources

Therefore, the applicant has designed a power generation device with two-way rotation for this situation. Through the large-angle pitch system, the energy capture when the two-way incoming flow can be realized, and the utilization rate of tidal current energy resources is greatly improved; but for the power generation device with two-way rotation , there is no actual two-way switching method at present, and the forward and reverse switching is generally manual operation

However, manual operation generally lacks a basis for judgment and is prone to misjudgment, which in turn leads to failures that require shutdown and miss part of the tidal current energy resources.

[0005] It can be seen that the above-mentioned existing tidal current energy generator sets obviously still have inconvenience and defects in the forward and reverse control monitoring, and need to be further improved urgently.

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