A reactive power and unbalance compensation control method
A technology of balance compensation and control method, which is applied in the directions of reactive power compensation, reactive power adjustment/elimination/compensation, multi-phase network asymmetry reduction, etc., and can solve problems such as unfavorable energy saving and environmental protection, affecting power supply quality, etc.
Active Publication Date: 2021-04-20
武汉欣和开元电子有限公司
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Usually unbalanced load will bring asymmetrical components including zero-sequence components and negative-sequence components, especially during the use of three-phase four-wire power grids, which not only affects the quality of power supply, but also is not conducive to energy saving and environmental protection
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
[0038] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0039] Embodiments of the present invention provide a reactive power and unbalance compensation control method.
[0040] Please refer to figure 1 , figure 1 It is a flowchart of a reactive power and unbalance compensation control method in an embodiment of the present invention, specifically including:
[0041] S101: Connect the three-phase three-level IGBT inverter bridge circuit 1, the ARM sampling control circuit 2 and the IGBT drive circuit 3 together to form a three-phase four-wire reactive power and unbalance compensator; the three-phase four-wire wireless The power and unbalance compensator together with the grid three-phase four-wire power supply 4 and the grid load 5 form a three-phase four-wire reactive powe...
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 relates to a reactive power and unbalance compensation control method, which specifically includes: a three-phase three-level IGBT inverter bridge circuit, an ARM sampling control circuit and an IGBT drive circuit are connected together to form a three-phase four-wire system reactive power and unbalance Compensator; the three-phase four-wire system reactive and unbalanced compensator is electrically connected to the grid three-phase four-wire system power supply and load; the ARM sampling control circuit uses a repetitive control method to drive the three-phase through the IGBT drive circuit A three-level IGBT inverter bridge circuit, and output the output current of the three-phase three-level IGBT inverter bridge circuit to the three-phase four-wire system power supply side of the power grid, thereby realizing the reactive power and unbalance of the three-phase four-wire system Compensation control function. The beneficial effects of the present invention are: through the three-phase four-wire reactive power and unbalanced compensator and compensation control method, the asymmetrical components including zero-sequence components and negative-sequence components will be eliminated when unbalanced loads are eliminated, ensuring energy saving and environmental protection At the same time, improve the quality of power supply.
Description
technical field [0001] The invention belongs to the field of power electronics, in particular to a reactive power and unbalance compensation control method. Background technique [0002] Most of the loads in the power grid need to consume reactive power. It is unreasonable for these reactive powers to be provided by generators and transmitted over long distances. The reasonable method should be to generate the required reactive power near the loads, and It is the reactive power compensation mentioned above. Usually unbalanced load will bring asymmetrical components including zero-sequence components and negative-sequence components, especially during the use of three-phase four-wire power grids, which not only affects the quality of power supply, but also is not conducive to energy conservation and environmental protection. Unbalance compensation can be considered as a special form of reactive power compensation. Contents of the invention [0003] The purpose of the pres...
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): H02J3/18H02J3/26
CPCH02J3/1821H02J3/1857H02J3/26Y02E40/30Y02E40/50
Inventor 刘飞毕平劲李新初杨如峰蒋绍涛
Owner 武汉欣和开元电子有限公司