A power factor compensation system and compensation method for a distributed photovoltaic power station
A power factor compensation and distributed photovoltaic technology, which is applied in the direction of reactive power adjustment/elimination/compensation, photovoltaic power generation, flexible AC transmission system, etc., can solve the problems of power system interference fluctuations and power factor fluctuations, etc. Achieve the effect of improving accuracy and reducing fluctuation
Active Publication Date: 2020-12-04
中盛新能源科技南京有限公司
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the actual operation process, the distributed photovoltaic power station will bring interference fluctuations to the entire power system before and after grid connection, resulting in the inability of the existing reactive power compensation device to adjust effectively in time, resulting in the power factor of the power system Continuous fluctuation
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
specific Embodiment approach
[0031] refer to figure 1 , a specific embodiment of the present invention includes,
[0032] Power supply bus 1, used to connect to an external power supply network;
[0033] The transformer 2 is connected to the power supply bus 1, and is used to reduce the high voltage on the power supply bus and transmit it to the power distribution cabinet 3;
[0034] The power distribution cabinet 3 is used for distributing the electric energy after the step-down of the transformer 2 to each electric equipment;
[0035] The inverter 4 is connected to the incoming terminal of the power distribution cabinet 3 with the smallest capacity, and is used to input the electric energy of the distributed photovoltaic power station into the power consumption network;
[0036] The first SVG reactive power compensator 5 is connected to the incoming line end of the inverter 4, and is used for reactive power compensation on the inverter side;
[0037] The second SVG reactive power compensator 6 is con...
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 power factor compensation system of a distributed photovoltaic power station. The power factor compensation system comprises a power supply bus, a transformer, a power distribution cabinet, an inverter, a first SVG reactive compensator, a second SVG reactive compensator and a controller, wherein the power supply bus is used for connecting an external power supply network;the transformer is connected with the power supply bus, and is used for reducing high voltage on the power supply bus and then conveying the reduced voltage to the power distribution cabinet; the power distribution cabinet is used for distributing electric energy after the voltage reduction of the transformer to each electric equipment; the inverter is connected with the wire incoming terminal ofthe power distribution cabinet with the minimum capacity, and is used for inputting the electric energy of the distributed photovoltaic power station into an electricity utilization network; the first SVG reactive compensator is used for carrying out reactive compensation on the side of the inverter; the second SVG reactive compensator is used for carrying out reactive compensation on the whole electricity utilization network; and the controller is used for collecting the active power and reactive power of the power supply bus and the distributed photovoltaic power station and optimizing thepower factor of the whole electricity utilization network. The disadvantages in the prior art can be improved, and the accuracy of an electricity utilization system with a distributed photovoltaic access interface for power factor adjustment can be improved effectively.
Description
technical field [0001] The invention relates to the technical field of photovoltaic grid-connected power generation, in particular to a power factor compensation system of a distributed photovoltaic power station and a compensation method thereof. Background technique [0002] The traditional 10kV and below shunt capacitance compensation device is connected in parallel to the user-side bus, and the users are all electrical equipment. The strategy of reactive power compensation equipment controller control is also based on the active power forward. When connected to the distributed photovoltaic power station , the power generation of distributed photovoltaic power plants may be sent up after the user consumes part of it, that is, the active power may appear negative. If monitoring is carried out according to the calculation method of traditional power factor, the controller of reactive power compensation equipment will stop running, resulting in a decrease in power factor. I...
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): H02J3/18H02J3/38H02J3/00
CPCH02J3/383H02J3/00H02J3/1821Y02E10/56Y02E40/10
Inventor 刘军红韩子维周欣陈杨
Owner 中盛新能源科技南京有限公司