Unlock instant, AI-driven research and patent intelligence for your innovation.
Evaluation Method of Power Grid Transmission Quality Based on Phase Compensation Amplitude Division
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A phase compensation and quality evaluation technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as misjudgment and achieve the effect of avoiding misjudgment
Inactive Publication Date: 2019-08-27
HARBIN UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0005] However, if there is only time delay and no noise interference during power grid transmission, the power transmission quality is also perfect, but according to the technical means disclosed in the above three patents, there will be a problem of misjudgment (this problem will be discussed in detail Provide specific data description in the embodiment)
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment 1
[0045] This embodiment is an embodiment of a power grid transmission quality evaluation system based on phase compensation first and then judgment.
[0046] The grid power transmission quality evaluation system based on phase compensation first and then judgment in this embodiment, the circuit diagram is as follows figure 1 As shown, in the power grid transmission quality evaluation system based on phase compensation first and then judgment, the power plant signals are transmitted to the controller through the wireless transmission channel and the power grid transmission channel respectively;
[0047] In the wireless transmission channel,
[0048]It includes a first time recorder, a first transformer, a wireless transmitting module, a wireless connection receiving module, a differential module, a first absolute value module and a first comparison module; the first time recorder works synchronously with the first transformer, When the first mutual inductor extracts the origina...
specific Embodiment 2
[0058] This embodiment is an embodiment of a grid power transmission quality evaluation method based on phase compensation amplitude division.
[0059] The grid power transmission quality evaluation method based on phase compensation amplitude division in this embodiment is implemented on the grid power transmission quality evaluation system based on phase compensation first and judgment based on the first specific embodiment. The phase compensation amplitude division based method Grid transmission quality evaluation method, the flow chart is as follows figure 2 shown, including the following steps:
[0060] Step a, segmenting a cycle, the number of segments is N, and N is an integer multiple of 8, and the phase angle range n=2π / N of each segment is calculated;
[0061] Step b, the flag generator, the first time recorder and the first transformer work synchronously. When the first transformer extracts the original phase information of the power plant signal, the first time r...
specific Embodiment 3
[0089] This embodiment is an embodiment of a grid power transmission quality evaluation method based on phase compensation amplitude division.
[0090] The power grid transmission quality evaluation method based on phase compensation amplitude division in this embodiment is implemented on the grid power transmission quality evaluation system based on phase compensation first and then judgment described in specific embodiment 1, and is also based on the phase compensation described in specific embodiment 2 The specific implementation of the power grid transmission quality evaluation method based on the phase compensation amplitude division, the power grid transmission quality evaluation method based on the phase compensation amplitude division, is used to evaluate the power grid transmission quality when there is only a time delay in the power grid transmission, the method Flowchart such as figure 2 shown, including the following steps:
[0091] Step a, segmenting a cycle, the ...
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 power grid power transmission quality evaluation method based on phase compensation amplitude division, and belongs to the electric power system field and the like. The power grid power transmission quality evaluation method based on phase compensation amplitude division includes the steps: calculating the phase angle range of each section, enabling a flag bit generatorand a first time recorder to work with a first mutual inductor synchronously, obtaining the original phase information of a power plant signal through differential output by a controller, calculatingthe section to which the original phase of the power plant signal belongs, according to the difference of time recorded by the two time recorders, adjusting the output signal of a second mutual inductor, determining negative or positive of the third comparison output by the controller, according to the lookup mode and on the basis of the division rules, calculating the sectional compensation parameters, determining negative or positive of the first comparison output, the second comparison output and the third comparison output by the controller, calculating the section to which the phase belongs after the power plant signal is transmitted through the power grid, and finally determining the power grid transmission quality according to the sections. The power grid power transmission qualityevaluation method based on phase compensation amplitude division can evaluate the power transmission quality of the power grid and can also solve the misjudgment problem caused by time delay.
Description
technical field [0001] The invention discloses a grid power transmission quality evaluation method based on phase compensation amplitude division, which belongs to the technical field of electric power system, measurement and control system and detection evaluation. Background technique [0002] Power quality refers to the quality of electric energy in the power system. The ideal electrical energy should be a perfect sine wave. Some interference factors will make the waveform deviate from sinusoidal, which will cause power quality problems. On the one hand, we study which influencing factors will lead to power quality problems, and on the other hand, we study how to evaluate power quality problems. [0003] As for how to evaluate power quality, there are multiple power quality indicators to evaluate power quality at this stage, including: voltage interruption, frequency deviation, voltage drop, voltage rise, instantaneous pulse, voltage fluctuation, voltage notch, harmonic...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More