Method for dynamic voltage control of double-fed fan wind power plant participating in dynamic voltage control of electric power system
A double-fed wind turbine and dynamic voltage technology, applied in wind power generation, AC network voltage adjustment, electrical components, etc., can solve the problem of not being able to adapt to the fast and stable requirements of dynamic voltage regulation, not being able to fully mobilize the reactive power adjustment capability of wind turbines, and not being flexible enough And other issues
Active Publication Date: 2017-11-07
TSINGHUA UNIV
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, this method is not flexible enough, and cannot fully mobilize the reactive power adjustment capability of each wind turbine, and cannot meet the fast and stable requirements of dynamic voltage regulation in actual use.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0059] A method for the double-fed fan wind farm to participate in the voltage control of the power system proposed by the present invention, its flow chart is as follows figure 1 As shown, it includes the external equivalent identification process and the dynamic voltage regulation process based on wide-area proportional integral control. Both processes are executed in a certain cycle and completed by the wind farm coordination layer. Among them, the dynamic voltage regulation process will regularly send the information of the wind farm coordination layer to the double-fed wind turbine through broadcast communication, and also receive the measurement information of the double-fed wind turbine. The method includes the following steps:
[0060] (1) Set the sampling period T of the grid-connected point status of the DFIG wind farm u is 0.5 seconds, set the external equivalent identification period T of the DFIG wind farm p is 10 seconds, record the sampling period T u t at any...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention relates to a method of a double-fed fan wind power plant participating in dynamic voltage control of an electric power system, belonging to the electric power system operation and control technology field. The method comprises: a configuration of a double-fed fan wind power plant participating in dynamic voltage control is established; a wind power plant performs measurement of grid connection points, active power and reactive power to complete external equivalence identification; the wind power plant generates and outputs reactive power reference value; and according to a trend linearization method, each double-fed fan reactive output distribution model is established to realize reactive output rapid calculation of each double-fed fan and ensure the calculation accuracy. The method fully utilizes the reactive regulation capacity of the double-fed fan to realize voltage dynamic indifference regulation of the whole double-fed fan wind power plant and realize reasonable distribution of reactive power between double-fed fans so as to ensure the safety operation of the system. Besides, the wind power plant performs periodicity measurement of grid connection point data to complete and update external equivalence identification to obtain external system parameters.
Description
technical field [0001] The invention relates to a method for a double-fed fan wind farm to participate in the dynamic voltage control of a power system, and belongs to the technical field of power system operation and control. Background technique [0002] In the face of increasingly severe environmental problems, vigorously developing renewable energy is one of the most effective measures to solve the plight of economic development and optimize the energy structure. Among them, wind power is widely regarded as one of the effective alternatives to traditional energy sources. Countries are competing to develop wind power, and the installed capacity of wind power is increasing year by year with rapid growth. [0003] In my country, wind farms basically use large-scale wind turbines to form clusters, and then connect to the grid, which is concentrated in the fixed grid area. Due to the natural randomness and volatility of wind energy, large-scale wind power grid integration wi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02J3/16H02J3/06H02J3/38
CPCH02J3/06H02J3/16H02J3/386H02J2203/20Y02E10/76Y02E40/30
Inventor 吴文传张伯明孙宏斌许桐王中冠郭庆来王彬
Owner TSINGHUA UNIV