A voltage fluctuation suppression method for distribution network based on flexible multi-state switch
A voltage fluctuation, multi-state technology, applied in the direction of AC network voltage adjustment, circuit devices, AC network circuits, etc., can solve the problems of insufficient controllable capacity, low utilization rate of distributed power sources, inability to suppress system voltage fluctuations, etc. The effect of controlling large capacity, ensuring normal power consumption and improving utilization rate
Active Publication Date: 2021-11-30
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] The existing technology has the problem of insufficient controllable capacity, unable to suppress the voltage fluctuation of the system in a wider range, and the utilization rate of distributed power is low
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
[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0042] Such as figure 1 As shown, the three terminals of the flexibl...
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 invention discloses a method for suppressing voltage fluctuations in a distribution network based on a flexible multi-state switch. The suppression method includes the following steps: Step 1: Control each port of the flexible multi-state switch through the multi-terminal power mutual adjustment of the flexible multi-state switch The input and output power of each port can be adjusted to adjust the power flow distribution of the grid connected to each port, and the voltage fluctuation caused by the access of distributed power sources to the voltage of the distribution network can be suppressed; Step 2: Establish a distribution network operation model including distributed power sources and flexible multi-state switches , analyze the flexible multi-state switch and the operating constraints of the distribution network; step 3: take the minimum voltage fluctuation of the distribution network as the optimization goal, use the optimization algorithm to solve the distribution network operation model in step 2, and obtain the flexible multi-state switch. Port active power and reactive power command value; Step 4: According to the command value of step 3, the flexible multi-state switch is adjusted to realize that the voltage fluctuation caused by the access of distributed power sources to each node of the distribution network does not exceed the allowable value.
Description
technical field [0001] The invention relates to the technical field of power electronic equipment control, in particular to a method for suppressing voltage fluctuations of distribution networks based on flexible multi-state switches. Background technique [0002] In the field of electric power development, new renewable energy power generation typified by photovoltaic power generation and wind power generation has gradually become one of the hotspots of research and development in the current electric power field. Up to now, my country has put into operation a number of large-capacity photovoltaic power plants and wind power plants. When large-scale renewable energy power generation is connected to the grid, it will inevitably affect the power flow distribution and flow direction of the grid. Moreover, the power generation output of renewable energy such as photovoltaic power generation and wind power generation is greatly affected by external conditions such as the surrou...
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 Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12H02J3/16
CPCH02J3/12H02J3/16H02J2203/20Y02E40/30
Inventor 赵国鹏周昕炜刘思远杨勇王朝亮许烽丁超
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)