Optimal control method and system for voltage-source-type wind generation set
A technology for optimizing control and wind turbines. It is applied in the application of control systems, wind turbine control, engine control, etc., and can solve problems such as underspeed and overspeed.
Active Publication Date: 2020-07-10
ZHEJIANG WINDEY
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Problems solved by technology
[0006] The present invention aims to overcome the technical problem of active power coordination between the main control system of the voltage source wind turbine and the converter in the prior art, and provides a method and system for optimizing the control of the voltage source wind turbine, which solves the problem of the voltage source wind turbine. The problem of active power coordination between the main control system of the unit and the converter can avoid overspeed or underspeed faults; reduce the load impact of the transmission chain shafting of the voltage source wind turbine under the grid frequency disturbance condition
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Embodiment 1
[0053] Embodiment 1: A voltage source type wind turbine optimization control system of this embodiment, such as figure 1 As shown, it includes voltage source converter 3, shafting load optimization control loop 1, speed optimization control loop 2 and variable speed and pitch control loop 4, voltage source converter 3 outputs f to shafting load optimization control loop 1 , output ΔT f ,P g and ω g Output T to speed optimization control loop 2 and variable speed and pitch control loop 4 gmd For the speed optimization control loop 2, the speed optimization control loop 2 outputs T grd to the adder and output ω at the same time g For shafting load optimization control loop 1 and variable speed and pitch control loop 4, shafting load optimization control loop 1 outputs T Bd to the adder, the adder outputs T g d to the voltage source converter 3 .
[0054] The shafting load optimization control loop can reduce the impact of the transmission chain shafting load of the voltag...
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The invention discloses an optimal control method and system for a voltage-source-type wind generation set. The constraint of the load and revolving speed are considered. The system comprises a voltage-source-type current transformer, an axis load optimal control ring, a revolving speed optimal control ring and a variable-speed variable-pitch control ring. The voltage-source-type current transformer outputs f to the axis load optimal control ring and outputs deltaTf, Pg and omegag to the revolving speed optimal control ring, the variable-speed variable-pitch control ring outputs Tgmd to the revolving speed optimal control ring, the revolving speed optimal control ring outputs Tgrd to an adding device and simultaneously outputs omegag to the axis load optimal control ring and the variable-speed variable-pitch control ring, the axis load optimal control ring outputs TBd to the adding device, and the adding device outputs Tgd to the voltage-source-type current transformer. According to the optimal control method and system, cooperation of the active power of a main control system and the current transformer of the voltage-source-type wind generation set is achieved, and the fault of the excessively high or low revolving speed is avoided. The load impact of a transmission chain shaft system of the voltage-source-type wind generation set under the disturbance work condition of the grid frequency is reduced.
Description
technical field [0001] The present invention relates to the technical field of control of a main control system of a wind turbine, in particular to a voltage source type wind turbine optimization control method and system. Background technique [0002] my country's wind power has developed rapidly, and its installed capacity has ranked first in the world for nine consecutive years, making it the third largest energy source in my country. With the rapid increase of installed capacity of wind power in my country, the proportion of installed capacity of wind power in the total installed capacity of electric power is also increasing, and the installed capacity of wind power in some power grids exceeds more than 30% of the total capacity. [0003] The current wind turbines are all current source-type operating characteristics, and have poor overload capacity, and do not actively participate in grid regulation, resulting in severe challenges for the safe and stable operation of a ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F03D7/00F03D17/00H02J3/38H02J3/48H02J3/24
CPCF03D7/00F05B2270/101F05B2270/1011F05B2270/328F05B2270/331F05B2270/337F03D17/00H02J3/24H02J3/48Y02E10/72Y02E10/76
Inventor 应有杨靖洪敏孙勇许国东史晓鸣
Owner ZHEJIANG WINDEY