A tidal flow energy power generation field planning method considering tidal resource assessment and flow velocity direction
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A power plant and tidal technology, applied in the field of tidal flow energy power plant planning, can solve problems such as affecting the practical value of the planning method and weakening the profitability of the power plant
Inactive Publication Date: 2019-05-10
CHONGQING UNIV
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[0007] In the planning of tidal current energy power plants, if tidal resource reserves and directionality are not considered, it will seriously affect the engineering practical value of the planning method and weaken the profitability of the power plant; however, in the current research, it has not yet been considered The planning method for the directionality of reserves and tidal current velocity is still blank
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Embodiment 1
[0163] see Figure 1 to Figure 5 , a tidal current energy plant planning method considering tidal resource assessment and flow velocity direction, which mainly includes the following steps:
[0164] 1) Obtain the input parameters of the power collection system, that is, the power network.
[0165] The input parameters mainly include the measured tidal current velocity amplitude v tm and flow direction v td , the number of groups in the direction of tidal current velocity g d , The cut-in flow velocity v of the tidal current energy generating set in , Rated velocity v rated , cut out flow velocity v out , Rated output power P rated , Capability coefficient C p, thrust coefficient C T , blade diameter D, seawater density ρ, maximum carrying capacity Cap of the medium voltage submarine cable ci , the unit resistance R of the submarine cable ci , The unit cost of the submarine cable c mv,ci , The length x of the rectangular planning sea area of the tidal current power...
Embodiment 2
[0322] On the basis of considering the tidal resource reserves and tidal flow velocity in the planned sea area, a tidal current energy power plant will be built in the southeast coastal area of my country. The specific implementation steps are as follows:
[0323] 1) Input parameters: input the measured tidal flow velocity amplitude v of 24 periods per day for 90 days tm and flow direction v td , (tm,td=1,2,...,2160), and the flow velocity direction corresponds to the flow velocity amplitude one by one; the tidal flow velocity direction is divided into 12 groups. Cut-in flow velocity v of tidal current energy generating set in =0.7m / s, rated velocity v rated =3.0m / s, cut-out velocity v out =5.0m / s, rated output power P rated =1.5MW, Capability coefficient C p =0.45, thrust coefficient C T =0.89, blade diameter D=18m. Seawater density ρ=1.025×10 3 kg / m 3 . The medium voltage cable data is shown in Table 1:
[0324] Table 1 Medium voltage cable parameter list
[03...
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Abstract
The invention discloses a tidal flow energy power generation field planning method considering tidal resource assessment and flow velocity direction. The method mainly comprises the following steps: 1) obtaining input parameters of a tidal flow velocity, power generation field cost, a current collection system and a particle swarm algorithm; and 2) based on the input parameters, determining the probability of occurrence of flow velocities in different directions and different amplitudes. and 3) calculating tidal resource reserves Pc in the planned sea area, and determining the number of unitsof the tidal flow energy power generation field according to the tidal resource reserves Pc. And 4) establishing a tidal flow energy power generation field optimization planning model. And 5) based onthe tide flow energy power generation field optimization planning model, planning initial positions of the tide flow energy power generation set and the offshore transformer substation. And 6) calculating the daily generating capacity of the power plant, and updating the coordinates of the tidal flow energy generator set and the transformer substation. And 7) grouping the units in the power generation field to avoid cross-region intersection of lines. The tidal flow energy power generation field planning method based on the optimal unit layout can be widely applied to tidal flow energy powergeneration field planning considering tidal resource assessment and the tidal flow velocity direction, and can provide a beneficial reference for analysis of planning problems related to a tidal flowenergy power generation system. The method has the advantages that the method can be widely applied to tidal flow energy power generation field planning considering tidal resource assessment and tidalflow velocity direction.
Description
technical field [0001] The invention relates to the field of electric power system planning, in particular to a tidal current power plant planning method considering tidal resource evaluation and flow velocity direction. Background technique [0002] The vast ocean can provide humans with a variety of renewable energy sources. As one of them, tidal current energy has a good momentum of development in recent years due to its advantages such as environmental friendliness, high power density, and strong regularity. , a number of international organizations and international companies have carried out research on tidal current power generation technology, and tidal current power plants have been put into operation or are under construction. [0003] The tidal current energy power plant is mainly composed of a generator set and a power collection system; there are currently two main types of generator sets, which are dam-type units that use tidal potential energy to generate elec...
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