New energy wind power generation field grid-connected power generation system
A technology for power plants and new energy, applied in the field of new energy power generation, can solve the problems of wind power generation constraints, high cost of battery energy storage, and difficult management, etc.
Active Publication Date: 2015-09-23
芜湖市大文节能环保技术有限公司
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Problems solved by technology
[0002] At present, there are many defects in the use of wind power generation, which makes it difficult to connect to the grid for power generation. The main reason is that wind power generation is very unstable, and it is difficult to connect to the grid for power generation. However, the cost of storing energy in batteries is high and management is difficult, which greatly hinders the development of wind power generation. restrict
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[0013] like figure 1 As shown, the new energy power plant grid-connected power generation system is mainly composed of two parallel power supply lines, one is a renewable energy power supply line, and the renewable energy used in this embodiment is a wind power plant power supply line, which includes power generation facilities 1 (Wind energy farm rectifier), thyristor rectifier 2, inverter 3; Another power supply line is an auxiliary energy supply line, which includes auxiliary energy 4, capacitors C4-C6, transformer T2, fixed rectifier 6 and The diodes D9-D14 rectify and input the inverter 3 .
[0014] The above-mentioned auxiliary energy flow 4 is an AC power supply, which is mainly provided by the national grid, and auxiliary energy 4 can also be provided by batteries in isolated grid power generation areas. (To supply energy to the first group of renewable energy power generation devices, the subsequent power generation devices can provide auxiliary energy from the isola...
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The invention discloses a new energy wind power generation field grid-connected power generation system. An auxiliary energy output end is connected with a primary winding of a transformer T1 through a first super capacitor, and the auxiliary energy output end is connected with a primary winding of a transformer T2 through a second super capacitor. A secondary winding of the transformer T2 is connected with an inverter through a stationary rectifier. The inverter is connected with a power generation facility. A secondary winding of the transformer T1 is connected with the power generation facility through a silicon controlled rectifier. The output of the inverter is connected to a power grid to supply power. The new energy wind power generation field grid-connected power generation system has the advantages that the phenomena that a wind energy power generation field is not continuous and not stable and wind curtailment occurs can be effectively eliminated, and the requirements for peak clipping and valley filling can be met at good time; when the voltage of the wind energy power generation field descends, an auxiliary energy power supply line can be directly used for supplying power and can directly help the wind energy power generation field to provide the corresponding voltage shortfall so that the wind energy power generation field can generate power as much as possible, the clamp current for continuous power generation of the wind energy power generation field can be guaranteed, and the wind energy power generation field can obtain continuous and stable power supply.
Description
technical field [0001] The invention relates to the field of new energy (solar energy, wind energy) power generation. Background technique [0002] At present, there are many defects in the use of wind power generation, which makes it difficult to connect to the grid for power generation. The main reason is that wind power generation is very unstable, and it is difficult to connect to the grid for power generation. However, the cost of storing energy in batteries is high and management is difficult, which greatly hinders the development of wind power generation. restrict. Contents of the invention [0003] The technical problem to be solved by the present invention is to realize a controllable wind energy (solar) power plant grid-connected power generation system, which is conducive to fully and effectively utilizing wind energy power generation and reactive power energy of the grid to realize continuous and stable power generation of renewable energy and Grid-connected p...
Claims
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Inventor 王大文孙祯王梦琦王日晟
Owner 芜湖市大文节能环保技术有限公司