Power quality series compensation method and device based on wind power
A series compensation and power quality technology, applied in the direction of AC network voltage adjustment, etc., can solve the problems affecting promotion, development, and troubled dynamic voltage compensator, etc., to reduce losses, protect power grid loads, and ensure rapid response effects.
Inactive Publication Date: 2016-06-01
国网山东省电力公司聊城供电公司 +1
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Compared with UPS, dynamic voltage compensator can effectively solve the problem of voltage sag. However, the energy storage problem has always plagued the research of dynamic voltage compensator. Although some advanced methods such as minimum energy injection method have been proposed, the additional energy storage Always affect its further promotion and development
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
[0036] The method and device for series compensation of power quality based on wind power according to the present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments.
[0037] figure 1 It shows a structural block diagram of the wind power-based power quality series compensation device in an embodiment of the present invention. Such as figure 1As shown, the power quality series compensation device based on wind power in this embodiment includes: a wind generator 8, which converts wind energy into alternating current output; a rectifier module 1, which is connected with the wind generator 8, and outputs the The alternating current is converted into a stable direct current output; the H-bridge inverter unit 2, whose DC bus is connected to the output end of the rectification module 1, converts the direct current output by the rectification module 1 into an alternating current output; the transformer 4, wh...
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 wind-powder-based electric power quality cascade compensation method. The method comprises the following steps of: converting wind energy into alternating current and outputting the alternating current by a wind driven generator; converting the alternating current output by the wind driven generator into stable direct current by adopting a rectifier module, and performing tracking control at the highest power on the rectifier module to ensure that the active power of the direct current output by the rectifier module is maximum; converting the direct current output by the rectifier module into alternating current; and detecting the voltage of an electric network, and if the voltage of the electric network is reduced, controlling an H-bridge inversion unit to output alternating current to compensate the voltage drop of the electric network. Correspondingly, the invention also discloses a wind-powder-based electric power quality cascade compensation device, and the device comprises the wind driven generator, the rectifier module, the H-bridge inversion unit, a grid-connected inverter, a controller and the like.
Description
technical field [0001] The invention relates to a grid voltage compensation method and device, in particular to a wind power-based power quality series compensation method and device. Background technique [0002] Developed countries have very high requirements on power quality. Power quality problems will not only bring great economic losses to the industry, such as shutdown and restart, which will increase production costs, damage responsive equipment, scrap semi-finished products, and reduce product quality. Marketing difficulties will damage the company's image and good business relations with users, and it will also bring harm to equipment in important power-consuming departments such as medical care, causing serious production and operation accidents. Research by the Electric Power Research Institute (EPRI) of the United States shows that power quality problems cause US industries to lose $30 billion in data, materials and productivity each year (Electric Power Researc...
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): H02J3/12
Inventor 孙岳李永旭吴传涛卢之男邵光磊马进
Owner 国网山东省电力公司聊城供电公司